Asus LX PLUS Desktop Motherboard M5A78L M LX PLUS User Manual

M5A78L-M LX  
Contents  
iii  
Contents  
iv  
Notices  
Federal Communications Commission Statement  
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two  
conditions:  
This device may not cause harmful interference, and  
This device must accept any interference received including interference that may cause  
undesired operation.  
This equipment has been tested and found to comply with the limits for a Class B digital  
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide  
reasonable protection against harmful interference in a residential installation. This  
equipment generates, uses and can radiate radio frequency energy and, if not installed  
and used in accordance with manufacturer’s instructions, may cause harmful interference  
to radio communications. However, there is no guarantee that interference will not occur  
in a particular installation. If this equipment does cause harmful interference to radio or  
television reception, which can be determined by turning the equipment off and on, the user  
is encouraged to try to correct the interference by one or more of the following measures:  
Reorient or relocate the receiving antenna.  
Increase the separation between the equipment and receiver.  
Connect the equipment to an outlet on a circuit different from that to which the receiver is  
connected.  
Consult the dealer or an experienced radio/TV technician for help.  
The use of shielded cables for connection of the monitor to the graphics card is required  
to assure compliance with FCC regulations. Changes or modifications to this unit not  
expressly approved by the party responsible for compliance could void the user’s authority  
to operate this equipment.  
Canadian Department of Communications Statement  
This digital apparatus does not exceed the Class B limits for radio noise emissions from  
digital apparatus set out in the Radio Interference Regulations of the Canadian Department  
of Communications.  
This class B digital apparatus complies with Canadian ICES-003.  
ASUS Recycling/Takeback Services  
ASUS recycling and takeback programs come from our commitment to the highest standards  
for protecting our environment. We believe in providing solutions for you to be able to  
responsibly recycle our products, batteries, other components as well as the packaging  
materials. Please go to http://csr.asus.com/english/Takeback.htm for the detailed recycling  
information in different regions.  
vi  
 
REACH  
Complying with the REACH (Registration, Evaluation, Authorisation, and Restriction of  
Chemicals) regulatory framework, we published the chemical substances in our products at  
DO NOT throw the motherboard in municipal waste. This product has been designed to  
enable proper reuse of parts and recycling. This symbol of the crossed out wheeled bin  
indicates that the product (electrical and electronic equipment) should not be placed in  
municipal waste. Check local regulations for disposal of electronic products.  
DO NOT throw the mercury-containing button cell battery in municipal waste. This symbol  
of the crossed out wheeled bin indicates that the battery should not be placed in municipal  
waste.  
Safety information  
Electrical safety  
To prevent electric shock hazard, disconnect the power cable from the electric outlet  
before relocating the system.  
When adding or removing devices to or from the system, ensure that the power cables  
for the devices are unplugged before the signal cables are connected. If possible,  
disconnect all power cables from the existing system before you add a device.  
Before connecting or removing signal cables from the motherboard, ensure that all  
power cables are unplugged.  
Seek professional assistance before using an adapter or extension cord. These devices  
could interrupt the grounding circuit.  
Ensure that your power supply is set to the correct voltage in your area. If you are not  
sure about the voltage of the electrical outlet you are using, contact your local power  
company.  
If the power supply is broken, do not try to fix it by yourself. Contact a qualified service  
technician or your retailer.  
Operation safety  
Before installing the motherboard and adding devices on it, carefully read all the manuals  
that came with the package.  
Before using the product, ensure that all cables are correctly connected and the power  
cables are not damaged. If you detect any damage, contact your dealer immediately.  
To avoid short circuits, keep paper clips, screws, and staples away from connectors,  
slots, sockets and circuitry.  
Avoid dust, humidity, and temperature extremes. Do not place the product in any area  
where it may become wet.  
Place the product on a stable surface.  
If you encounter technical problems with the product, contact a qualified service  
technician or your retailer.  
vii  
 
About this guide  
This user guide contains the information you need when installing and configuring the  
motherboard.  
How this guide is organized  
This guide contains the following parts:  
Chapter 1: Product introduction  
This chapter describes the features of the motherboard and the new technology it  
supports.  
Chapter 2: BIOS information  
This chapter tells how to change system settings through the BIOS Setup menus.  
Detailed descriptions of the BIOS parameters are also provided.  
Conventions used in this guide  
To ensure that you perform certain tasks properly, take note of the following symbols used  
throughout this manual.  
DANGER/WARNING: Information to prevent injury to yourself when trying to  
complete a task.  
CAUTION: Information to prevent damage to the components when trying to  
complete a task.  
IMPORTANT: Instructions that you MUST follow to complete a task.  
NOTE: Tips and additional information to help you complete a task.  
Where to find more information  
Refer to the following sources for additional information and for product and software  
updates.  
1.  
ASUS websites  
The ASUS website provides updated information on ASUS hardware and software  
products. Refer to the ASUS contact information.  
2.  
Optional documentation  
Your product package may include optional documentation, such as warranty flyers,  
that may have been added by your dealer. These documents are not part of the  
standard package.  
Typography  
Bold text  
Italics  
Indicates a menu or an item to select.  
Used to emphasize a word or a phrase.  
<Key>  
Keys enclosed in the less-than and greater-than sign means  
that you must press the enclosed key.  
Example: <Enter> means that you must press the Enter or  
Return key.  
<Key1>+<Key2>+<Key3>  
If you must press two or more keys simultaneously, the key  
names are linked with a plus sign (+).  
Example: <Ctrl>+<Alt>+<D>  
viii  
 
M5A78L-M LX specifications summary  
CPU  
AMD® Socket AM3+ for AMD® FX™ / Phenom™ II /  
Athlon™ II / Sempron™ 100 series processors  
AMD® Cool ‘n’ Quiet™ 2.0 Technology (depending on CPU type)  
Supports CPU up to 95W  
* 32nm AM3+ CPU is supported by BIOS version 0401 and later.  
Chipset  
AMD® 760G (780L)/ SB710  
Front side bus  
Memory  
Up to 5200 MT/s HyperTransport™ 3.0 interface  
Dual-channel memory architecture  
2 x 240-pin DIMM slots support maximum 8GB unbuffered  
ECC and non-ECC DDR3 1866(O.C.) / 1600(O.C.) / 1333 /  
1066MHz memory modules  
*
AMD® FX™ Series CPU on this motherboard supports up to  
DDR3 1866MHz as its standard memory frequency.  
** Due to CPU spec., AMD® 100 and 200 series CPUs support  
up to DDR3 1066MHz. With ASUS design, this motherboard  
can support up to DDR3 1333MHz.  
*** When overclocking, some AMD CPU models may not  
support DDR3 1600 MHz or higher frequency DIMMs.  
****Refer to www.asus.com for the latest Memory QVL (Qualified  
Vendors List).  
***** Use a 64-bit Windows® OS if you want to install 4GB or  
more memory on the motherboard.  
Graphics  
Integrated ATI Radeon™ HD 3000 GPU  
Supports max. shared memory of 1GB  
Supports RGB with max. resolution of 2048 x 1536 (@85Hz)  
Supports Microsoft® DirectX 10  
Supports Hybrid CrossFireX™ (for Windows® Vista or later  
version)  
Hybrid CrossFireX™.  
Expansion slots  
Storage / RAID  
1 x PCIe 2.0 x16 slot  
2 x PCIe x1 slots  
1 x PCI slot  
6 x Serial ATA 3Gb/s connectors support RAID 0, RAID 1,  
RAID 10, and JBOD configurations  
LAN  
Realtek Gigabit LAN  
Audio  
ALC887 supports 8-channel* High Definition Audio  
Supports Single SPDIF Out and Anti-pop function  
* Use the chassis with HD audio module in the front panel to  
support 8-channel audio output.  
USB  
Supports up to 10 USB 2.0/1.1 ports (6 ports at mid-board,  
4 ports at the back panel)  
(continued on the next page)  
ix  
 
M5A78L-M LX specifications summary  
Back panel I/O ports  
1 x PS/2 Keyboard port  
1 x PS/2 Mouse port  
1 x COM port  
1 x LPT port  
1 x D-Sub port  
1 x LAN (RJ-45) port  
4 x USB 2.0/1.1 ports  
3 x Audio jacks  
Internal I/O connectors  
3 x USB 2.0/1.1 connectors support additional 6 USB 2.0/1.1  
ports  
6 x SATA connectors  
1 x CPU / 1 x Chassis fan connectors  
1 x Front panel audio connector  
1 x S/PDIF_OUT connector  
1 x Speaker connector  
1 x System panel connector  
1 x 24-pin ATX power connector  
1 x 4-pin ATX 12V power connector  
BIOS  
16Mb Flash ROM, AMI BIOS, PnP, DMI2.0, WfM2.0,  
ACPI2.0a, SM BIOS 2.6  
ASUS unique features  
ASUS Core unlocker  
ASUS Q-Fan  
ASUS CrashFree BIOS3  
ASUS EZ Flash2  
ASUS AI Charger  
ASUS MyLogo2  
ASUS EPU-4 Engine  
ASUS Anti Surge  
ASUS exclusive  
Intelligent overclocking tools:  
overclocking features  
-
Turbo Key  
SFS (Stepless Frequency Selection):  
-
FSB frequency tuning from 200MHz up to 550MHz at  
1MHz increment  
-
Adjustable DRAM Voltage  
Overclocking Protection:  
ASUS C.P.R (CPU Parameter Recall)  
-
Accessories  
Support DVD  
2 x Serial ATA 3Gb/s cables  
1 x I/O shield  
1 x User Manual  
Drivers  
ASUS Update  
ASUS utilities  
Anti-Virus software (OEM version)  
Form factor  
MicroATX form factor: 9.6 in x 8.0 in (24.4 cm x 20.3 cm)  
*Specifications are subject to change without notice.  
x
Chapter 1  
Product introduction  
1.1  
Welcome!  
Thank you for buying an ASUS® M5A78L-M LX motherboard!  
The motherboard delivers a host of new features and latest technologies, making it another  
standout in the long line of ASUS quality motherboards!  
Before you start installing the motherboard, and hardware devices on it, check the items in  
your package with the list below.  
1.2  
Package contents  
Check your motherboard package for the following items.  
Motherboard  
Cables  
ASUS M5A78L-M LX motherboard  
2 x Serial ATA cables  
1 x I/O shield  
Accessories  
Application DVD  
Documentation  
ASUS motherboard Support DVD  
User Manual  
If any of the above items is damaged or missing, contact your retailer.  
1.3  
Special features  
1.3.1  
Product highlights  
AMD® FX™ / Phenom™ II / Athlon™ II / Sempron™ 100 series  
CPU support  
This motherboard supports AMD® Socket AM3+ multi-core processors  
with unique L3 cache and delivers better overclocking capabilities with  
less power consumption. It features dual-channel DDR3 memory support  
and accelerates data transfer rate up to 5200MT/s via HyperTransport™  
3.0-based system bus. This motherboard also supports AMD® CPUs in  
the new 32nm manufacturing process.  
ASUS M5A78L-M LX  
1-1  
 
HyperTransport™ 3.0 support  
HyperTransport™ 3.0 technology provides 2.6 times more bandwidth  
than HT1.0 that radically improves system efficiency for a smoother and  
faster computing environment.  
AMD® Cool ‘n’ Quiet Technology  
This motherboard supports the AMD® Cool ‘n’ Quiet technology which  
monitors system operation and automatically adjusts CPU voltage and  
frequency for a cool and quiet operating environment.  
Dual-Channel DDR3 1866 (O.C.) support  
This motherboard supports DDR3 memory that features data transfer  
rates of 1866 (O.C.)/1600 (O.C.)/1333/1066 MHz to meet the higher  
bandwidth requirements of the latest operating system, 3D graphics,  
multimedia, and Internet applications.  
Hybrid CrossFireX™ support  
ATI Hybrid CrossFireX™ technology greatly boosts graphics performance  
with an onboard GPU and a discrete GPU.  
Hybrid CrossFireX™ is supported by Windows® Vista / Windows® 7OS only.  
Gigabit LAN solution  
The onboard LAN controller is a highly integrated Gb LAN controller. It is  
enhanced with an ACPI management function to provide efficient power  
management for advanced operating systems.  
Serial ATA 3Gb/s technology and RAID support  
This motherboard supports hard drives based on the Serial ATA (SATA)  
3Gb/s storage specification, delivering enhanced scalability and doubling  
the bus bandwidth for high-speed data retrieval and save. It also supports  
RAID 0, RAID 1, and RAID 0+1 configurations for Serial ATA hard drives.  
1-2  
Chapter 1: Product introduction  
1.3.2  
Innovative ASUS features  
Core Unlocker  
1
2
ASUS Core Unlocker simplifies the activation of a latent AMD® CPU-  
with just pressing a key. Enjoy an instant performance boost by simply  
unlocking the extra cores, without performing complicated BIOS changes.  
ASUS Turbo Key  
ASUS Turbo Key allows you to turn the PC power button into  
an overclocking button. After the easy setup, Turbo Key boosts  
performances without interrupting ongoing work or games, simply through  
pressing the button.  
ASUS MyLogo2™  
Turn your favorite photos into 256-color boot logos to personalize your  
system.  
ASUS CrashFree BIOS 3  
ASUS CrashFree BIOS 3 is an auto-recovery tool that allows you to  
restore a corrupted BIOS file using the bundled support DVD or a USB  
flash disk that contains the BIOS file.  
ASUS EZ Flash 2  
ASUS EZ Flash 2 allows you to update the BIOS from a USB flash disk  
before entering the OS.  
ASUS Q-Fan  
ASUS Q-Fan technology intelligently adjusts the CPU fan speed  
according to system loading to ensure a quiet, cool, and efficient  
operation.  
ASUS Anti-Surge Protection  
This special design prevents expensive devices and the motherboard  
from damage caused by power surges from switching power supply  
(PSU).  
ASUS EPU  
ASUS EPU is a unique power saving technology that detects the current  
system loadings and adjusts the power consumption in real time.  
ASUS M5A78L-M LX  
1-3  
 
C.P.R. (CPU Parameter Recall)  
The BIOS C.P.R. feature automatically restores the CPU default settings  
when the system hangs due to overclocking failure. C.P.R. eliminates the  
need to open the system chassis and clear the RTC data. Simply shut  
down and reboot the system, and the BIOS automatically restores the  
CPU parameters to their default settings.  
ErP ready  
The motherboard is European Union´s Energy-related Products (ErP)  
ready, and ErP requires products to meet certain energy efficiency  
requirements in regards to energy consumptions. This is in line with  
ASUS vision of creating environment-friendly and energy-efficient  
products through product design and innovation to reduce carbon  
footprint of the product and thus mitigate environmental impacts.  
1-4  
Chapter 1: Product introduction  
1.4  
Before you proceed  
Take note of the following precautions before you install motherboard components or change  
any motherboard settings.  
Unplug the power cord from the wall socket before touching any component.  
Before handling components, use a grounded wrist strap or touch a safely grounded  
object or a metal object, such as the power supply case, to avoid damaging them due to  
static electricity.  
Hold components by the edges to avoid touching the ICs on them.  
Whenever you uninstall any component, place it on a grounded antistatic pad or in the  
bag that came with the component.  
Before you install or remove any component, switch off the ATX power supply and  
detach its power cord. Failure to do so may cause severe damage to the motherboard,  
peripherals, or components.  
Onboard LED  
The motherboard comes with a standby power LED that lights up to indicate that the system  
is ON, in sleep mode, or in soft-off mode. This is a reminder that you should shut down  
the system and unplug the power cable before removing or plugging in any motherboard  
component. The illustration below shows the location of the onboard LED.  
SB_PWR  
M5A78L-M LX  
ON  
OFF  
Standby Power Powered Off  
M5A78L-M LX Onboard LED  
ASUS M5A78L-M LX  
1-5  
 
1.5  
Motherboard overview  
1.5.1  
Placement direction  
When installing the motherboard, ensure that you place it into the chassis in the correct  
orientation. The edge with external ports goes to the rear part of the chassis as indicated in  
the image below.  
1.5.2  
Screw holes  
Place six screws into the holes indicated by circles to secure the motherboard to the chassis.  
DO NOT overtighten the screws! Doing so can damage the motherboard.  
Place this side towards  
the rear of the chassis.  
M5A78L-M LX  
1-6  
Chapter 1: Product introduction  
 
1.5.3  
Motherboard layout  
1
5
6
2
3
4
20.3cm(8.0in)  
KBMS  
EPU  
KBPWR  
ATX12V  
3
USB34  
LAN1_USB12  
CPU_FAN  
CHA_FAN  
AMD®  
760G  
AUDIO  
PCIEX1_1  
RTL  
8111E  
PCIEX16  
M5A78L-M LX  
CLRTC  
16Mb  
BIOS  
Super  
I/O  
AMD®  
SB710  
7
Lithium Cell  
PCIEX1_2  
CMOS Power  
SATA3G_2  
SATA3G_1  
SATA3G_4  
SATA3G_3  
PCI1  
USB910  
USBPW5-10  
USB56  
ALC  
887  
SPDIF_OUT  
SPEAKER  
USB78  
AAFP  
SB_PWR  
F_PANEL  
14  
13 12 11  
10  
9
8
2
1.5.4  
Layout contents  
Connectors/Jumpers/Slots  
Page  
Connectors/Jumpers/Slots  
Page  
1. Keyboard power (3-pin KBPWR)  
1-19 8.  
System panel connector (10-1 pin F_PANEL) 1-24  
2. USB device wake-up (3-pin USBPW1-4,  
USBPW5-10)  
1-19 9.  
Speaker connector (4- pin SPEAKER)  
1-24  
1-25  
3. ATX power connectors (24-pin EATXPWR, 4-pin 1-22 10. USB connectors (10-1 pin USB56, USB78,  
ATX12V)  
USB910)  
4. CPU and chassis fan connectors (4-pin  
1-26 11. Digital audio connector (4-1 pin SPDIF_OUT) 1-25  
CPU_FAN and 3-pin CHA_FAN)  
5. AMD CPU socket  
1-8  
1-11 13. Front panel audio connector (10-1 pin AAFP) 1-21  
1-23 14. Clear RTC RAM (CLRTC) 1-18  
12. Onboard LED (SB_PWR)  
1-5  
6. DDR3 DIMM sockets  
7. Serial ATA connectors (7-pin SATA1-6)  
ASUS M5A78L-M LX  
1-7  
 
1.6  
Central Processing Unit (CPU)  
This motherboard comes with an AM3+ socket designed for FX™ / Phenom™ II / Athlon™ II /  
Sempron™ 100 series processors.  
The AM3+ socket has a different pinout from the AM2+/AM2 socket. Ensure that you use a  
CPU designed for the AM3+ socket. The CPU fits in only one correct orientation. DO NOT  
force the CPU into the socket to prevent bending the pins and damaging the CPU!  
1.6.1  
Installing the CPU  
To install a CPU:  
1.  
Locate the CPU socket on the motherboard.  
M5A78L-M LX  
M5A78L-M LX CPU AM3+  
2.  
Press the lever sideways to unlock the  
socket, then lift it up to a 90°-100° angle.  
Socket lever  
Ensure that the socket lever is lifted up to a 90°-100° angle; otherwise, the CPU will not fit  
in completely.  
3.  
Position the CPU above the socket such that the CPU  
corner with the gold triangle matches the socket corner  
with a small triangle.  
4.  
Carefully insert the CPU into the socket until it fits in place.  
The CPU fits only in one correct orientation.  
DO NOT force the CPU into the socket to  
prevent bending the pins and damaging the  
CPU!  
Small triangle  
Gold triangle  
1-8  
Chapter 1: Product introduction  
 
5.  
6.  
When the CPU is in place, push down the socket  
lever to secure the CPU. The lever clicks on the side  
tab to indicate that it is locked.  
Install a CPU heatsink and fan following the  
instructions that comes with the heatsink package.  
You can also refer to section 1.6.2 Installing  
heatsink and fan for instructions.  
7.  
Connect the CPU fan cable to the CPU_FAN connector on the motherboard.  
CPU_FAN  
GND  
CPU FAN PWR  
CPU FAN IN  
CPU FAN PWM  
M5A78L-M LX  
M5A78L-M LX CPU fan connector  
DO NOT forget to connect the CPU fan connector! Hardware monitoring errors can occur if  
you fail to plug this connector.  
ASUS M5A78L-M LX  
1-9  
1.6.2  
Installing the heatsink and fan  
Ensure that you use only AMD-certified heatsink and fan assembly.  
To install the CPU heatsink and fan:  
1.  
Place the heatsink on top of the installed CPU, ensuring that the heatsink fits properly  
on the retention module base.  
The retention module base is already installed on the motherboard upon purchase.  
You do not have to remove the retention module base when installing the CPU or  
installing other motherboard components.  
If you purchased a separate CPU heatsink and fan assembly, ensure that a Thermal  
Interface Material is properly applied to the CPU heatsink or CPU before you install the  
heatsink and fan assembly.  
CPU Fan  
CPU Heatsink  
Retention bracket  
Retention Module Base  
Retention bracket lock  
Your boxed CPU heatsink and fan assembly should come with installation instructions for  
the CPU, heatsink, and the retention mechanism. If the instructions in this section do not  
match the CPU documentation, follow the latter.  
2.  
Attach one end of the retention bracket to the retention module base.  
1
2
4
3
5
1-10  
Chapter 1: Product introduction  
 
3.  
Align the other end of the retention bracket to the retention module base. A clicking  
sound denotes that the retention bracket is in place.  
Ensure that the fan and heatsink assembly perfectly fits the retention mechanism module  
base, otherwise you cannot snap the retention bracket in place.  
4.  
Push down the retention bracket lock on the retention mechanism to secure the  
heatsink and fan to the module base.  
5.  
When the fan and heatsink assembly is in place, connect the CPU fan cable to the  
connector on the motherboard labeled CPU_FAN.  
DO NOT forget to connect the CPU fan connector! Hardware monitoring errors can occur if  
you fail to plug this connector.  
1.7  
System memory  
1.7.1  
Overview  
The motherboard comes with two Double Data Rate 3 (DDR3) Dual Inline Memory Modules  
(DIMM) sockets. The figure illustrates the location of the DDR3 DIMM sockets:  
Channel  
Sockets  
DIMM_A1  
DIMM_B1  
Channel A  
Channel B  
M5A78L-M LX  
M5A78L-M LX 240-pin DDR3 DIMM sockets  
ASUS M5A78L-M LX  
1-11  
 
1.7.2  
Memory configurations  
You may install 512MB, 1GB, 2GB, and 4GB unbuffered ECC and non-ECC DDR3 DIMMs  
into the DIMM sockets.  
You may install varying memory sizes in Channel A and Channel B. The system maps  
the total size of the lower-sized channel for the dual-channel configuration. Any excess  
memory from the higher-sized channel is then mapped for single-channel operation.  
Always install DIMMs with the same CAS latency. For optimum compatibility, we  
recommend that you obtain memory modules from the same vendor.  
Due to the memory address limitation on 32-bit Windows® OS, when you install 4GB  
or more memory on the motherboard, the actual usable memory for the OS can be  
about 3GB or less. For effective use of memory, we recommend that you do any of the  
following:  
-
-
Install a maximum of 3GB system memory if you are using a 32-bit Windows®  
OS.  
Use a 64-bit Windows® OS if you want to install 4GB or more memory on the  
motherboard.  
This motherboard does not support DIMMs made up of 256 megabits (Mb) chips or less.  
M5A78L-M LX Motherboard Qualified Vendors Lists (QVL)  
DDR3-1866(O.C.) MHz capability  
Timing  
DIMM  
DIMM Support  
Vendor  
Part No.  
Size  
SS/DS  
Brand  
Chip NO.  
Voltage  
A*  
B*  
(BIOS)  
Apacer  
Corsair  
78.0AGCD.CDZ(XMP)  
CM3X2G1800C8D  
2048MB(Kit of 2)  
2048MB  
SS  
DS  
SS  
N/A  
N/A  
N/A  
Heat-Sink Package  
Heat-Sink Package  
Heat-Sink Package  
Transcend TX1800KLU-2GK  
1024MB  
DDR3-1600(O.C.) MHz capability  
DIMM  
Support  
SS/  
DS  
Timing DIMM  
(BIOS)  
Vendor  
Part No.  
Size  
Brand Chip NO.  
Voltage  
A* B*  
A-Data  
Corsair  
Corsair  
Corsair  
Corsair  
Corsair  
Corsair  
Crucial  
Crucial  
Crucial  
Crucial  
Crucial  
Crucial  
AD31600X002GMU  
4096MB(Kit of 2)  
2048MB(Kit of 2)  
2048MB  
DS N/A  
SS N/A  
DS N/A  
Heat-Sink Package 7-7-7-20  
1.75-1.85V  
1.8V  
CM3X1G1600C9DHX  
Heat-Sink Package 9-9-9-24  
Heat-Sink Package  
CM3X2G1600C9DHX  
TR3X6G1600C8 G(XMP)  
TR3X6G1600C8D G(XMP)  
TR3X6G1600C9 G(XMP)  
TR3X6G1600C8D G(XMP)  
BL12864BA1608.8SFB(XMP)  
BL12864BE2009.8SFB3(EPP)  
BL25664BN1608.16FF(XMP)  
BL25664TB1608.K16SF(XMP)  
BL25664TG1608.K16SF(XMP)  
BL25664TR1608.K16SF(XMP)  
6144MB(Kit of 3 ) DS N/A  
6144MB(Kit of 3 ) DS N/A  
6144MB(Kit of 3 ) DS N/A  
Heat-Sink Package  
Heat-Sink Package 8-8-8-24  
Heat-Sink Package 9-9-9-24  
Heat-Sink Package 8-8-8-24  
Heat-Sink Package 8-8-8-24  
Heat-Sink Package 9-9-9-28  
Heat-Sink Package  
1.65V  
1.65V  
1.65V  
1.8V  
6144MB(Kit of 3)  
3072MB(Kit of 3)  
3072MB(Kit of 3)  
DS N/A  
SS  
SS  
N/A  
N/A  
2.0V  
6144MB(Kit of 3 ) DS N/A  
6144MB(Kit of 3)  
6144MB(Kit of 3)  
6144MB(Kit of 3)  
DS N/A  
DS N/A  
DS N/A  
Heat-Sink Package 8-8-8-24  
Heat-Sink Package 8-8-8-24  
Heat-Sink Package 8-8-8-24  
continued on the next page  
1-12  
Chapter 1: Product introduction  
 
DDR3-1600(O.C.) MHz capability  
DIMM  
Support  
SS/  
DS  
Timing DIMM  
(BIOS)  
Vendor  
Part No.  
Size  
Brand Chip NO.  
Voltage  
A* B*  
G.SKILL  
G.SKILL  
G.SKILL  
Kingmax  
F3-12800CL9D-2GBNQ  
F3-12800CL8T-6GBHK  
F3-12800CL9T-6GBNQ  
FLGD45F-B8KG9  
2048MB(Kit of 2)  
2048MB  
SS  
N/A  
Heat-Sink Package 9-9-9-24  
Heat-Sink Package 8-8-8-21  
1.5V~1.6V  
1.6~1.65  
DS N/A  
DS N/A  
SS  
6144MB(Kit of 3)  
1024MB  
Heat-Sink Package 9-9-9-24  
1.5V~1.6V  
KFB8FNGXF-  
ANX-12A  
Kingmax  
Kingmax  
FLGD45F-B8MF7 MAEH(XMP) 1024MB  
SS  
DS  
N/A  
Heat-Sink Package  
7
7
FLGE85F-B8KG9  
2048MB  
KFB8FNGXF-  
ANX-12A  
Kingmax  
Kingston  
Kingston  
OCZ  
FLGE85F-B8MF7 MEEH(XMP)  
KHX1600C9D3K2/4G  
2048MB  
DS N/A  
DS N/A  
DS N/A  
Heat-Sink Package  
Heat-Sink Package  
Heat-Sink Package  
4096MB(kit of 2)  
6144MB(Kit of 3)  
3072MB(Kit of 3)  
1.7-1.9V  
1.65V  
KHX1600C9D3K3/6GX(XMP)  
OCZ3G1600LV3GK  
SS  
N/A  
Heat-Sink Package 8-8-8-24  
1.65V  
OCZ  
OCZ3G1600LV6GK  
6144MB(Kit of 3 ) DS N/A  
Heat-Sink Package 8-8-8-24  
1.65V  
Super Talent WA160UX6G9  
6144MB(Kit of 3 ) DS N/A  
Heat-Sink Package  
9
DDR3-1333 MHz capability  
DIMM  
Support  
Timing  
DIMM  
(BIOS)  
SS/  
Vendor  
Part No.  
Size  
Brand  
DS  
Chip NO.  
Voltage  
A* B*  
A-Data  
A-Data  
AD31333001GOU  
AD31333G001GOU  
1024MB  
SS  
A-Data AD30908C8D-151C E0906  
N/A Heat-Sink Package  
3072MB(Kit of 3) SS  
8-8-8-24  
8-8-8-24  
1.65-  
1.85V  
A-Data  
A-Data  
AD31333002GOU  
2048MB  
2048MB  
DS  
DS  
A-Data AD30908C8D-151C E0903  
N/A Heat-Sink Package  
AD31333G002GMU  
1.65-  
1.85V  
Apacer  
Apacer  
Corsair  
Corsair  
Corsair  
Corsair  
Corsair  
Corsair  
Corsair  
Corsair  
Crucial  
Crucial  
Crucial  
Crucial  
Crucial  
Crucial  
Crucial  
Crucial  
Crucial  
78.01GC6.9L0  
1024MB  
2048MB  
1024MB  
1024MB  
SS  
DS  
SS  
SS  
Apacer AM5D5808AEWSBG0914E  
9
9
78.A1GC6.9L1  
Apacer AM5D5808AEWSBG0908D  
CM3X1024-1333C9DHX  
CM3X1024-1333C9  
TR3X3G1333C9 G  
N/A  
N/A  
N/A  
N/A  
N/A  
Heat-Sink Package  
Heat-Sink Package  
Heat-Sink Package  
Heat-Sink Package  
Heat-Sink Package  
9-9-9-24  
1.60V  
3072MB(Kit of 3) SS  
3072MB(Kit of 3) SS  
3072MB(Kit of 3) SS  
9-9-9-24  
9-9-9-24  
9
1.50V  
1.50V  
1.5V  
TR3X3G1333C9 G  
TR3X3G1333C9  
CM3X1024-1333C9DHX  
CM3X2048-1333C9DHX  
TW3X4G1333C9 G  
CT12864BA1339.8FF  
CT12872BA1339.9FF  
BL12864TA1336.8SFB1  
CT12864BA1339.8SFD  
CT25664BA1339.16FF  
CT25672BA1339.18FF  
1024MB  
2048MB  
DS  
DS  
Corsair Heat-Sink Package  
N/A  
N/A  
Heat-Sink Package  
Heat-Sink Package  
4096MB(Kit of 2) DS  
9-9-9-24  
1.50V  
1024MB  
1024MB  
SS  
SS  
Micron 9FF22D9KPT  
9
Micron 91F22D9KPT(ECC)  
9
6-6-6-20  
9
2048MB(Kit of 2) SS  
N/A  
Heat-Sink Package  
1.8V  
3072MB(Kit of 3) SS  
Micron 8XD22D9JNM  
Micron 9KF27D9KPT  
Micron 91F22D9KPT(ECC)  
2048MB  
2048MB  
DS  
DS  
9
9
BL25664ABA1336.16SFB1 4096MB(Kit of 2) DS  
N/A  
N/A  
N/A  
Heat-Sink Package  
Heat-Sink Package  
Heat-Sink Package  
6-6-6-20  
6-6-6-20  
7-7-7-24  
1.8V  
1.8V  
BL25664BA1336.16SFB1  
4096MB(Kit of 2) DS  
BL25664BN1337.16FF  
(XMP)  
6144MB(Kit of 3 ) DS  
1.65V  
Crucial  
CT25664BA1339.16SFD  
6144MB(Kit of 3 ) DS  
Micron 8UD22D9JNM  
9
(continued on the next page)  
ASUS M5A78L-M LX  
1-13  
DDR3-1333 MHz capability  
DIMM  
Support  
Timing  
DIMM  
(BIOS)  
SS/  
DS  
Vendor  
Part No.  
Size  
Brand  
Chip NO.  
Voltage  
A* B*  
G.SKILL  
G.SKILL  
G.SKILL  
G.SKILL  
G.SKILL  
G.SKILL  
G.SkiLL  
G.SKILL  
G.SKILL  
GEIL  
F3-10600CL8D-2GBHK  
F3-10600CL9D-2GBPK  
F3-10666CL7T-3GBPK  
F3-10666CL9T-3GBNQ  
F3-10600CL7D-2GBPI  
F3-10600CL9D-2GBNQ  
F3-10666CL8D-4GBHK  
F3-10666CL7T-6GBPK  
F3-10666CL9T-6GBNQ  
DDR3-1333 CL9-9-9-24  
GV34GB1333C7DC  
1024MB  
1024MB  
SS  
SS  
G.SKILL Heat-Sink Package  
G.SKILL Heat-Sink Package  
3072MB(Kit of 3) SS  
N/A  
N/A  
Heat-Sink Package  
Heat-Sink Package  
7-7-7-18 1.5~1.6V  
3072MB(Kit of 3) SS  
9-9-9-24 1.5~1.6V  
1024MB  
1024MB  
DS  
DS  
G.SKILL Heat-Sink Package  
G.SKILL Heat-Sink Package  
4096MB(Kit of 2 ) DS  
6144MB(Kit of 3 ) DS  
6144MB(Kit of 3) DS  
N/A  
N/A  
N/A  
N/A  
N/A  
GEIL  
Heat-Sink Package  
Heat-Sink Package  
Heat-Sink Package  
Heat-Sink Package  
Heat-Sink Package  
GL1L128M88BA12N  
8-8-8-21 1.5-1.6V  
7-7-7-18 1.5~1.6V  
9-9-9-24 1.5V~1.6V  
9
1024MB  
2048MB  
SS  
DS  
GEIL  
7-7-7-24  
1.5V  
GEIL  
GG34GB1333C9DC  
4096MB(Kit of 2) DS  
9-9-9-24 1.3V(low  
voltage)  
GEIL  
DDR3-1333 CL9-9-9-24  
FLFD45F-B8MH9 MAES  
FLFE85F-B8MF9  
6144MB(Kit of 3 ) DS  
N/A  
Heat-Sink Package  
9
9
1.5V  
Kingmax  
Kingmax  
Kingmax  
Kingston  
Kingston  
Micron  
Micron  
Micron  
Micron  
Micron  
Micron  
Micron  
Micron  
OCZ  
1024MB  
2048MB  
2048MB  
1024MB  
2048MB  
1024MB  
1024MB  
1024MB  
SS  
DS  
DS  
SS  
Micron 9CF22D9KPT  
Micron 8HD22D9JNM  
Micron 9GF27D9KPT  
FLFE85F-B8MH9 MEES  
KVR1333D3N9/1G  
Hynix  
H5TQ1G83BFR  
1.5V  
1.5V  
KVR1333D3N9/2G  
DS Qimonda IDSH1G-03A1F1C-13H  
MT8JTF12864AY-1G4D1  
MT8JTF12864AZ-1G4F1  
MT9JSF 12872AZ-1G4F1  
MT8JTF12864AY-1G4D1  
MT12JSF25672AZ-1G4F1  
MT16JTF25664AY-1G1D1  
MT18JTF25664AZ-1G4F1  
MT16JTF25664AY-1G4D1  
OCZ3X1333LV3GK(XMP)  
OCZ3G13334GK  
SS  
SS  
SS  
Micron 8LD22D9JNM  
Micron 9FF22D9KPT  
Micron 91F22D9KPT(ECC)  
Micron 8XD22D9JNM  
Micron 91F22D9KPT(ECC)  
Micron 8LD22 D9JNM  
Micron 9KF27D9KPT  
Micron 8UD22D9JNM  
9
9
9
9
3072MB(Kit of 3) SS  
2048MB  
2048MB  
2048MB  
DS  
DS  
DS  
9
9
6144MB(Kit of 3 ) DS  
3072MB(Kit of 3) SS  
4096MB(Kit of 2) DS  
4096MB(Kit of 2) DS  
6144MB(Kit of 3 ) DS  
6144MB(Kit of 3 ) DS  
6144MB(Kit of 3 ) DS  
N/A  
N/A  
N/A  
N/A  
N/A  
N/A  
Heat-Sink Package  
Heat-Sink Package  
Heat-Sink Package  
Heat-Sink Package  
Heat-Sink Package  
Heat-Sink Package  
1.6V  
1.7V  
OCZ  
OCZ  
OCZ3P13334GK  
7-7-7-20  
9-9-9-20  
7-7-7-20  
8-8-8-20  
1.8V  
OCZ  
OCZ3G1333LV6GK  
1.65V  
1.65V  
1.60V  
OCZ  
OCZ3P1333LV6GK  
OCZ  
OCZ3X1333LV6GK(XMP)  
SAMSUNG M378B2873DZ1-CH9  
SAMSUNG M378B2873DZ1-CH9  
SAMSUNG M378B2873EH1-CH9  
SAMSUNG M391B2873DZ1-CH9  
SAMSUNG M378B5673DZ1-CH9  
SAMSUNG M378B5673EH1-CH9  
SAMSUNG M391B5673DZ1-CH9  
Super Talent W1333X2GB8  
1024MB  
1024MB  
1024MB  
1024MB  
2048MB  
2048MB  
2048MB  
1024MB  
1024MB  
1024MB  
2048MB  
2048MB  
SS Samsung K4B1G0846D-HCH9  
SS Samsung SEC 846 HCH9 K4B1G08460  
SS Samsung SEC 913 HCH9 K4B1G0846E  
SS Samsung K4B1G0846D-HCH9(ECC)  
DS Samsung K4B1G0846D-HCH9  
DS Samsung SEC 913 HCH9 K4B1G0846E  
DS Samsung K4B1G0846D-HCH9(ECC)  
SS  
SS  
SS  
DS  
DS  
N/A  
N/A  
N/A  
Heat-Sink Package  
Transcend  
Transcend  
Transcend  
Transcend  
TS128MLK64V3U  
TS128MLK72V3U  
TS256MLK64V3U  
TS256MLK64V3U  
SEC 813HCH9 K4B1G0846D  
K4B1G0846D(ECC)  
Micron 9GF27D9KPT  
N/A SEC816HCH9K4B1G0846D  
1-14  
Chapter 1: Product introduction  
DDR3-1066 MHz capability  
DIMM  
Support  
Timing  
DIMM  
(BIOS)  
SS/  
DS  
Vendor  
Part No.  
Size  
Brand Chip NO.  
Voltage  
A*  
B*  
Crucial  
Crucial  
Crucial  
Crucial  
Elpida  
CT12864BA1067.8FF  
CT12872BA1067.9FF  
CT25664BA1067.16FF  
CT25672BA1067.18FF  
EBJ51UD8BAFA-AC-E  
EBJ51UD8BAFA-AE-E  
KVR1066D3N7/1G  
1024MB  
1024MB  
2048MB  
2048MB  
512MB  
SS Micron  
SS Micron  
DS Micron  
DS Micron  
SS Elpida  
SS Elpida  
9GF22D9KPT  
7
7
7
7
9HF22D9KPT(ECC)  
9HF22D9KPT  
9GF22D9KPT(ECC)  
J5308BASE-AC-E  
J5308BASE-AC-E  
Elpida  
512MB  
Kingston  
Kingston  
Micron  
Micron  
Micron  
Micron  
Micron  
Micron  
OCZ  
1024MB  
2048MB  
1024MB  
1024MB  
1024MB  
SS Kingston D1288JEKAPGA7U  
7
7
1.5V  
1.5V  
KVR1066D3N7/2G  
DS Kingston D1288JEKAPGA7U  
MT8JTF12864AY-1G1D1  
MT8JTF12864AZ-1G1F1  
MT9JSF12872AZ-1G1F1  
SS Micron  
SS Micron  
SS Micron  
DS Micron  
DS Micron  
DS Micron  
8ED22D9JNL  
9GF22D9KPT  
7
7
9HF22D9KPT(ECC)  
8LD22D9JNL  
MT16JTF25664AY-1G1D1 2048MB  
MT16JTF25664AZ-1G1F1 2048MB  
MT18JSF25672AZ-1G1F1 2048MB  
9HF22D9KPT  
7
7
9GF22D9KPT(ECC)  
Heat-Sink Package  
OCZ3SOE10662GK  
2048MB(Kit of 2) DS N/A  
7-7-7-16  
1.75V  
SAMSUNG M378B2873EH1-CF8  
1024MB  
4096MB  
SS Samsung SEC 901 HCF8 K4B1G0846E  
SAMSUNG M378B5273BH1-CF8  
DS Samsung 846 K4B2G0846B-HCF8  
AMD® FX™ Series CPU on this motherboard supports up to DDR3 1866MHz as its  
standard memory frequency.  
Due to CPU spec., AMD® 100 and 200 series CPUs support up to DDR3 1066MHz. With  
ASUS design, this motherboard can support up to DDR3 1333MHz.  
When overclocking, some AMD CPU models may not support DDR3 1600 MHz or  
higher frequency DIMMs.  
SS: Single-sided / DS: Double-sided  
DIMM support:  
A*: Supports one module inserted into any slot as single-channel memory configuration.  
B*: Supports one pair of modules inserted into either the blue slots or the black slots  
as one pair of dual-channel memory configuration.  
ASUS M5A78L-M LX  
1-15  
1.7.3  
Installing a DIMM  
Unplug the power supply before adding or removing DIMMs or other system components.  
Failure to do so can cause severe damage to both the motherboard and the components.  
2
1.  
Press the retaining clips outward to  
unlock a DIMM socket.  
DIMM notch  
2.  
Align a DIMM on the socket such that  
the notch on the DIMM matches the  
DIMM slot key on the socket.  
1
1
Unlocked retaining clip  
A DIMM is keyed with a notch so that it fits in only one direction. DO NOT force a DIMM into  
a socket in the wrong direction to avoid damaging the DIMM.  
3.  
Firmly insert the DIMM into the socket  
until the retaining clips snap back in place  
and the DIMM is properly seated.  
3
Locked Retaining Clip  
1.7.4  
Removing a DIMM  
To remove a DIMM:  
1.  
Simultaneously press the retaining clips  
outward to unlock the DIMM.  
2
Support the DIMM lightly with your  
fingers when pressing the retaining  
clips. The DIMM might get damaged  
when it flips out with extra force.  
1
1
DIMM notch  
2.  
Remove the DIMM from the socket.  
1-16  
Chapter 1: Product introduction  
 
1.8  
Expansion slots  
In the future, you may need to install expansion cards. The following sub-sections describe  
the slots and the expansion cards that they support.  
Unplug the power cord before adding or removing expansion cards. Failure to do so may  
cause you physical injury and damage motherboard components.  
1.8.1  
Installing an expansion card  
To install an expansion card:  
1.  
Before installing the expansion card, read the documentation that came with it and  
make the necessary hardware settings for the card.  
2.  
Remove the system unit cover (if your motherboard is already installed in a chassis).  
3.  
Remove the bracket opposite the slot that you intend to use. Keep the screw for later  
use.  
4.  
Align the card connector with the slot and press firmly until the card is completely  
seated on the slot.  
5.  
6.  
Secure the card to the chassis with the screw you removed earlier.  
Replace the system cover.  
1.8.2  
Configuring an expansion card  
After installing the expansion card, configure it by adjusting the software settings.  
1.  
Turn on the system and change the necessary BIOS settings, if any. See Chapter 2 for  
information on BIOS setup.  
2.  
Assign an IRQ to the card.  
3.  
Install the software drivers for the expansion card.  
When using PCI cards on shared slots, ensure that the drivers support “Share IRQ” or that  
the cards do not need IRQ assignments. Otherwise, conflicts will arise between the two PCI  
groups, making the system unstable and the card inoperable.  
1.8.3  
PCI slot  
The PCI slot supports cards such as a LAN card, SCSI card, USB card, and other cards that  
comply with PCI specifications.  
1.8.4  
PCI Express x1 slots  
This motherboard supports PCI Express x1 network cards, SCSI cards, and other cards that  
comply with the PCI Express specifications.  
1.8.5  
PCI Express x16 slot  
This motherboard supports a PCI Express x16 graphics card that comply with the PCI  
Express specifications.  
ASUS M5A78L-M LX  
1-17  
 
1.9  
Jumpers  
1.  
Clear RTC RAM (CLRTC)  
This jumper allows you to clear the Real Time Clock (RTC) RAM in CMOS. You can  
clear the CMOS memory of date, time, and system setup parameters by erasing  
the CMOS RTC RAM data. The onboard button cell battery powers the RAM data in  
CMOS, which include system setup information such as system passwords.  
CLRTC  
1
2
2
3
M5A78L-M LX  
Normal  
Clear RTC  
(Default)  
M5A78L-M LX Clear RTC RAM  
To erase the RTC RAM:  
1. Turn OFF the computer and unplug the power cord.  
2. Move the jumper cap from pins 1-2 (default) to pins 2-3. Keep the cap on pins 2-3  
for about 5~10 seconds, then move the cap back to pins 1-2.  
3. Plug the power cord and turn ON the computer.  
4. Hold down the <Del> key during the boot process and enter BIOS setup to reenter  
data.  
Except when clearing the RTC RAM, never remove the cap on CLRTC jumper default  
position. Removing the cap will cause system boot failure!  
If the steps above do not help, remove the onboard battery and move the jumper again  
to clear the CMOS RTC RAM data. After clearing the CMOS, reinstall the battery.  
You do not need to clear the RTC when the system hangs due to overclocking. For  
system failure due to overclocking, use the CPU Parameter Recall (C.P.R) feature. Shut  
down and reboot the system so the BIOS can automatically reset parameter settings to  
default values.  
1-18  
Chapter 1: Product introduction  
 
2.  
USB device wake-up (3-pin USBPW1-4, USBPW5-10)  
Set these jumpers to +5V to wake up the computer from S1 sleep mode (CPU stopped,  
DRAM refreshed, system running in low power mode) using the connected USB  
devices. Set these jumpers to +5VSB to wake up the compurer from S3 and S4 sleep  
modes (no power to CPU, DRAM in slow refresh, power supply in reduced power  
mode).  
USBPW1-4  
+5VSB  
+5V  
(Default)  
USBPW5-10  
1
2
2
3
M5A78L-M LX  
+5VSB  
+5V  
(Default)  
M5A78L-M LX USB device wake-up  
3.  
Keyboard power (3-pin KBPWR)  
This jumper allows you to enable or disable the keyboard wake-up feature. When you  
set this jumper to pins 2-3 (+5VSB), you can wake up the computer by pressing a key  
on the keyboard. This feature requires an ATX power supply that can supply at least 1A  
on the +5VSB lead, and a corresponding setting in the BIOS.  
KBPWR  
1
2
2
3
+5VSB  
+5V  
(Default)  
M5A78L-M LX  
M5A78L-M LX Keyboard power setting  
ASUS M5A78L-M LX  
1-19  
1.10  
Connectors  
1.10.1  
Rear panel ports  
1
2
3
4 5  
11  
10  
9
8
7
6
1.  
2.  
3.  
PS/2 Mouse port (green). This port is for a PS/2 mouse.  
Parallel port. This 25-pin port connects a parallel printer, a scanner, or other devices.  
LAN (RJ-45) port. This port allows Gigabit connection to a Local Area Network (LAN)  
through a network hub.  
LAN port LED indications  
ACT/LINK SPEED  
LED LED  
Activity/Link LED  
Speed LED  
Status  
Status  
Description  
No link  
Description  
OFF  
OFF  
10Mbps connection  
100Mbps connection  
1Gbps connection  
ORANGE  
BLINKING  
Linked  
ORANGE  
GREEN  
Data activity  
LAN port  
4.  
5.  
6.  
Line In port (light blue). This port connects to the tape, CD, DVD player, or other  
audio sources.  
Line Out port (lime). This port connects to a headphone or a speaker. In the 4, 6, and  
8-channel configurations, the function of this port becomes Front Speaker Out.  
Microphone port (pink). This port connects to a microphone.  
Refer to the audio configuration table below for the function of the audio ports in 2, 4, 6, or  
8-channel configuration.  
Port  
Headset 2-channel  
4-channel  
6-channel  
8-channel  
Light Blue (Rear panel)  
Lime (Rear panel)  
Pink (Rear panel)  
Lime (Front panel)  
Line In  
Line Out  
Mic In  
Rear Speaker Out  
Rear Speaker Out  
Rear Speaker Out  
Front Speaker Out  
Bass/Center  
Front Speaker Out Front Speaker Out  
Mic In  
Bass/Center  
Side Speaker Out  
To configure an 8-channel audio output:  
Use a chassis with HD audio module in the front panel to support 8-channel audio output.  
1-20  
Chapter 1: Product introduction  
 
7.  
8.  
9.  
USB 2.0 ports 1 and 2. These two 4-pin Universal Serial Bus (USB) ports connect to  
USB 2.0 devices.  
USB 2.0 ports 3 and 4. These two 4-pin Universal Serial Bus (USB) ports connect to  
USB 2.0 devices.  
Video Graphics Adapter (VGA) port. This 15-pin port is for a VGA monitor or other  
VGA-compatible devices.  
10. Serial port. This 9-pin COM1 port is for pointing devices or other serial devices.  
11. PS/2 Keyboard port (purple). This port is for a PS/2 keyboard.  
1.10.2  
Internal connectors  
1.  
Front panel audio connector (10-1 pin AAFP)  
This connector is for a chassis-mounted front panel audio I/O module that supports  
either High Definition Audio or AC`97 audio standard. Connect one end of the front  
panel audio I/O module cable to this connector.  
AAFP  
PIN 1  
PIN 1  
M5A78L-M LX  
HD-audio-compliant  
pin definition  
Legacy AC’97  
compliant definition  
M5A78L-M LX Front panel audio connector  
We recommend that you connect a high-definition front panel audio module to this  
connector to avail of the motherboard high-definition audio capability.  
If you want to connect a high definition front panel audio module to this connector, set  
the Front Panel Select item in the BIOS to [HD Audio]. See section 2.4.4 Onboard  
Device Configuration for details.  
The front panel audio I/O module is purchased separately.  
ASUS M5A78L-M LX  
1-21  
 
2.  
ATX power connectors (24-pin EATXPWR, 4-pin ATX12V)  
These connectors are for an ATX power supply. The plugs from the power supply are  
designed to fit these connectors in only one orientation. Find the proper orientation and  
push down firmly until the connectors completely fit.  
ATX12V  
EATXPWR  
+3 Volts  
GND  
+12 Volts  
+12 Volts  
+5V Standby  
Power OK  
GND  
+5 Volts  
+5 Volts  
+5 Volts  
-5 Volts  
GND  
PIN 1  
+5 Volts  
GND  
GND  
GND  
+5 Volts  
GND  
PSON#  
GND  
M5A78L-M LX  
+3 Volts  
+3 Volts  
-12 Volts  
+3 Volts  
PIN 1  
M5A78L-M LX ATX power connectors  
We recommend that you use an ATX 12V Specification 2.0-compliant power supply unit  
(PSU) with a minimum of 300W power rating. This PSU type has 24-pin and 4-pin power  
plugs.  
If you intend to use a PSU with 20-pin and 4-pin power plugs, ensure that the 20-pin  
power plug can provide at least 15 A on +12 V and that the PSU has a minimum power  
rating of 300W. The system may become unstable or may not boot up if the power is  
inadequate.  
DO NOT forget to connect the 4-pin ATX12V power plug. Otherwise, the system will not  
boot up.  
We recommend that you use a PSU with higher power output when configuring a  
system with more power-consuming devices or when you intend to install additional  
devices. The system may become unstable or may not boot up if the power is  
inadequate.  
If you are uncertain about the minimum power supply requirement for your system,  
com/PowerSupplyCalculator/PSCalculator.aspx?SLanguage=en-us for details.  
1-22  
Chapter 1: Product introduction  
3.  
Serial ATA connectors (7-pin SATA1, SATA2, SATA3, SATA4, SATA5, and SATA6)  
These connectors are for the Serial ATA signal cables for Serial ATA 3Gb/s hard disk  
and optical disk drives. The Serial ATA 3Gb/s is backward compatible with Serial ATA  
1.5Gb/s specification. The data transfer rate of the Serial ATA 3Gb/s is faster than the  
standard parallel ATA with 133MB/s (Ultra DMA133). If you install Serial ATA hard disk  
drives, you can create a RAID 0, RAID 1, or RAID 10 set through the onboard SB710  
chipset.  
SATA3G_5  
GND  
RSATA_TXN5  
RSATA_TXP5  
GND  
RSATA_RXN5  
RSATA_RXP5  
GND  
SATA3G_6  
GND  
RSATA_TXN6  
RSATA_TXP6  
GND  
RSATA_RXN6  
RSATA_RXP6  
GND  
SATA3G_2  
SATA3G_4  
SATA3G_1 SATA3G_3  
M5A78L-M LX  
M5A78L-M LX SATA connectors  
Install the Windows® XP Service Pack 3 or later versions before using Serial ATA.  
If you intend to create a SATA RAID set, set the type of the SATA connectors to [RAID]  
in the BIOS. See 2.3.4 SATA Configuration for details.  
The motherboard does not provide a floppy disk drive connector. You could use a USB  
floppy disk drive when installing Windows® XP operating system on a hard disk drive  
that includes a RAID/AHCI set.  
Due to Windows® XP limitation, Windows® XP may not recognize the USB floppy disk  
drive.  
For more details on RAID/AHCI, refer to the RA ID/AHCI Supplementary Guide included  
in the folder named Manual in the support DVD.  
ASUS M5A78L-M LX  
1-23  
4.  
System panel connector (10-1 pin F_PANEL)  
This connector supports several chassis-mounted functions.  
F_PANEL  
PLED  
PWRBTN  
PIN 1  
M5A78L-M LX  
+HDLED RESET  
M5A78L-M LX System panel connector  
System power LED (2-pin PLED)  
This 2-pin connector is for the system power LED. Connect the chassis power LED  
cable to this connector. The system power LED lights up when you turn on the system  
power, and blinks when the system is in sleep mode.  
Hard disk drive activity LED (2-pin +HDLED)  
This 2-pin connector is for the HDD Activity LED. Connect the HDD Activity LED cable  
to this connector. The HDD Activity LED lights up or flashes when data is read from or  
written to the HDD.  
Power/Soft-off button (2-pin PWRBTN)  
This 2-pin connector is for the system power button.  
Reset button (2-pin RESET)  
This 2-pin connector is for the chassis-mounted reset button for system reboot without  
turning off the system power.  
5.  
Speaker connector (4- pin SPEAKER)  
This 4-pin connector is for the chassis-mounted system warning speaker. The speaker  
allows you to hear system beeps and warnings.  
SPEAKER  
M5A78L-M LX  
PIN 1  
M5A78L-M LX Speaker out connector  
1-24  
Chapter 1: Product introduction  
6.  
USB connectors (10-1 pin USB56, USB78, USB910)  
These connectors are for USB 2.0 ports. Connect the USB module cable to any of  
these connectors, then install the module to a slot opening at the back of the system  
chassis. These USB connectors comply with USB 2.0 specification that supports up to  
480Mbps connection speed.  
USB910  
USB78  
USB56  
PIN 1  
PIN 1  
PIN 1  
M5A78L-M LX  
M5A78L-M LX USB2.0 connectors  
Never connect a 1394 cable to the USB connectors. Doing so will damage the  
motherboard!  
The USB 2.0 module is purchased separately.  
7.  
Digital audio connector (4-1 pin SPDIF_OUT)  
This connector is for an additional Sony/Philips Digital Interface (S/PDIF) port.  
M5A78L-M LX  
SPDIF_OUT  
M5A78L-M LX Digital audio connector  
Ensure that the audio device of Sound playback is Realtek High Definition Audio (the  
name may be different based on the OS). Go to Start > Control Panel > Sounds and  
Audio Devices > Sound Playback to configure the setting.  
The S/PDIF module is purchased separately.  
ASUS M5A78L-M LX  
1-25  
8.  
CPU and chassis fan connectors (4-pin CPU_FAN and 3-pin CHA_FAN)  
Connect the fan cables to the fan connectors on the motherboard, ensuring that the  
black wire of each cable matches the ground pin of the connector.  
CPU_FAN  
GND  
CPU FAN PWR  
CPU FAN IN  
CPU FAN PWM  
CHA_FAN  
M5A78L-M LX  
GND  
+12V  
Rotation  
M5A78L-M LX Fan connectors  
DO NOT forget to connect the fan cables to the fan connectors. Insufficient air flow inside  
the system may damage the motherboard components. These are not jumpers! DO NOT  
place jumper caps on the fan connectors.  
Only the 4-pin CPU fan connector supports the ASUS Q-Fan feature.  
1-26  
Chapter 1: Product introduction  
1.11  
Software support  
1.11.1  
Installing an operating system  
This motherboard supports Windows® XP/Vista/7 Operating Systems (OS). Always install the  
latest OS version and corresponding updates to maximize the features of your hardware.  
Motherboard settings and hardware options vary. Refer to your OS documentation for  
detailed information.  
Ensure that you install Windows® XP Service Pack 3 or later versions / Windows® Vista  
Service Pack 1 or later versions before installing the drivers for better compatibility and  
system stability.  
1.11.2  
Support DVD information  
The Support DVD that comes with the motherboard package contains the drivers, software  
applications, and utilities that you can install to avail all motherboard features.  
The contents of the Support DVD are subject to change at any time without notice. Visit the  
To run the Support DVD  
Place the Support DVD into the optical drive. If Autorun is enabled in your computer, the DVD  
automatically displays the Specials screen. Click Drivers, Utilities, Make Disk, Manual, and  
Contact tabs to display their respective menus.  
The following screen is for reference only.  
Click an icon to  
display Support DVD/  
motherboard information  
Click an item to install  
If Autorun is NOT enabled on your computer, browse the contents of the Support DVD to  
locate the file ASSETUP.EXE from the BIN folder. Double-click the ASSETUP.EXE to run  
the DVD.  
ASUS M5A78L-M LX  
1-27  
 
1-28  
Chapter 1: Product introduction  
Chapter 2  
BIOS information  
2.1  
Managing and updating your BIOS  
Save a copy of the original motherboard BIOS file to a USB flash disk in case you need to  
restore the BIOS in the future. Copy the original motherboard BIOS using the ASUS Update  
utility.  
2.1.1  
ASUS Update utility  
The ASUS Update is a utility that allows you to manage, save, and update the motherboard  
BIOS in Windows® environment.  
ASUS Update requires an Internet connection either through a network or an Internet  
Service Provider (ISP).  
This utility is available in the support DVD that comes with the motherboard package.  
Installing ASUS Update  
To install ASUS Update:  
1.  
2.  
3.  
Place the support DVD into the optical drive. The Drivers menu appears.  
Click the Utilities tab, then click ASUS Update.  
Follow the onscreen instructions to complete the installation.  
Quit all Windows® applications before you update the BIOS using this utility.  
Updating the BIOS  
To update the BIOS:  
1.  
From the Windows® desktop, click Start > Programs > ASUS > ASUS Update >  
ASUS Update to launch the ASUS Update utility.  
2.  
From the dropdown list, select either of the following methods:  
Updating from the Internet  
a. Select Update BIOS from the Internet, then click Next.  
b. Select the ASUS FTP site nearest you to avoid network traffic, or click Auto  
Select then click Next.  
c. From the FTP site, select the BIOS version that you want to download then click  
The ASUS Update utility is capable of updating itself through the Internet. Always update  
the utility to avail all its features.  
ASUS M5A78L-M LX  
2-1  
 
Updating from a BIOS file  
a. Select Update BIOS from a file, then click Next.  
b. Locate the BIOS file from the Open window, then click Open.  
3.  
Follow the onscreen instructions to complete the updating process.  
2.1.2  
ASUS EZ Flash 2 utility  
The ASUS EZ Flash 2 feature allows you to update the BIOS without using an OS-based  
utility.  
Before you start using this utility, download the latest BIOS file from the ASUS website at  
To update the BIOS using EZ Flash 2:  
1.  
Insert the USB flash disk that contains the latest BIOS file to the USB port, then launch  
EZ Flash 2 in either of these two ways:  
Press <Alt> + <F2> during POST.  
Enter the BIOS setup program. Go to the Tools menu to select EZ Flash 2 and  
press <Enter> to enable it.  
Press <Tab> to switch between drives until the correct BIOS file is found.  
ASUSTek EZ Flash 2 BIOS ROM Utility V3.44  
FLASH TYPE: WOINBOND W25X/Q16  
Current ROM  
Update ROM  
BOARD: Unknown  
VER: Unknown  
BOARD: M5A78L-M LX  
VER: 0203 (H:00 B:00)  
DATE: 03/05/2011  
DATE: Unknown  
PATH: C:\  
C:  
Note  
[Enter] Select or Load [Tab] Switch  
[Up/Down/Home/End] Move [B] Backup  
[V] Drive Info  
[ESC] Exit  
2.  
When the correct BIOS file is found, EZ Flash 2 performs the BIOS update process  
and automatically reboots the system when done.  
This function supports USB flash disks with FAT 32/16 format and single partition only.  
DO NOT shut down or reset the system while updating the BIOS to prevent system boot  
failure!  
2-2  
Chapter 2: BIOS information  
 
2.1.3  
ASUS CrashFree BIOS 3  
ASUS CrashFree BIOS 3 is an auto recovery tool that allows you to restore the BIOS file  
when it fails or gets corrupted during the updating process. You can restore a corrupted BIOS  
file using the motherboard support DVD or a USB flash drive that contains the BIOS file.  
Before using this utility, rename the BIOS file in the USB flash drive into  
MA78LMLX.ROM.  
Recovering the BIOS  
To recover the BIOS:  
1.  
Turn on the system.  
2.  
Insert the support DVD to the optical drive or the removable device that contains the  
BIOS file to the USB port or to the floppy disk drive, if supported.  
3.  
4.  
The utility automatically checks the devices for the BIOS file. When found, the utility  
reads the BIOS file and starts flashing the corrupted BIOS file.  
Turn off the system after the utility completes the updating process and turn on again.  
DO NOT shut down or reset the system while updating the BIOS! Doing so can cause  
system boot failure!  
Ensure to load the BIOS default settings to ensure system compatibility and stability. Select  
the Load Setup Defaults item under the Exit menu. Refer to section 2.8 Exit menu for  
details.  
ASUS M5A78L-M LX  
2-3  
 
2.2  
BIOS setup program  
Use the BIOS Setup program to update the BIOS or configure its parameters. The BIOS  
screens include navigation keys and brief online help to guide you in using the BIOS Setup  
program.  
Entering BIOS Setup at startup  
To enter BIOS Setup at startup:  
Press <Delete> during the Power-On Self-Test (POST). If you do not press <Delete>,  
POST continues with its routines.  
Entering BIOS Setup after POST  
To enter BIOS Setup after POST:  
Press <Ctrl>+<Alt>+<Delete> simultaneously.  
Press the reset button on the system chassis.  
Press the power button to turn the system off then back on. Do this option only if you  
failed to enter BIOS Setup using the first two options.  
Using the power button, reset button, or the <Ctrl>+<Alt>+<Del> keys to force  
reset from a running operating system can cause damage to your data or system. We  
recommend that you always shut down the system properly from the operating system.  
The default BIOS settings for this motherboard apply to most conditions to ensure  
optimum performance. If the system becomes unstable after changing any BIOS  
settings, load the default settings to ensure system compatibility and stability. Select the  
Load Setup Defaults item under the Exit menu. See section 2.8 Exit Menu.  
The BIOS setup screens in this chapter are for reference only. They may not exactly  
match what you see on your screen.  
Visit the ASUS website at www.asus.com to download the latest BIOS file for this  
motherboard.  
2-4  
Chapter 2: BIOS information  
 
2.2.1  
BIOS menu screen  
Menu items  
Menu bar  
Power  
Configuration fields  
General help  
Version 0203  
M5A78L-M LX BIOS Setup  
Main Advanced  
Boot  
Tools  
Exit  
Main Settings  
Use [ENTER], [TAB]  
or [SHIFT-TAB] to  
select a field.  
System Time  
System Date  
[19:34:30]  
[Thu 03/05/2011]  
SATA1  
SATA2  
SATA3  
SATA4  
SATA5  
SATA6  
:[Not Detected]  
:[Not Detected]  
:[Not Detected]  
:[Not Detected]  
:[Not Detected]  
:[Not Detected]  
Use [+] or [-] to  
configure system  
Time.  
SATA Configuration  
Select Screen  
Select Item  
System Information  
Change Field  
+-  
Tab  
F1  
Select Field  
General Help  
Save and Exit  
Exit  
F10  
ESC  
v02.61 (C)Copyright 1985-2011, American Megatrends, Inc.  
Navigation keys  
Submenu items  
2.2.2  
Menu bar  
The menu bar on top of the screen has the following main items:  
Main  
For changing the basic system configuration  
Advanced  
Power  
Boot  
For changing the advanced system settings  
For changing the advanced power management (APM) configuration  
For changing the system boot configuration  
Tools  
Exit  
For configuring options for special functions  
For selecting the exit options and loading default settings.  
To select an item on the menu bar, press the right or left arrow key on the keyboard until the  
desired item is highlighted.  
2.2.3  
Navigation keys  
At the bottom right corner of a menu screen are the navigation keys for that particular menu.  
Use the navigation keys to select items in the menu and change the settings.  
Some of the navigation keys differ from one screen to another.  
ASUS M5A78L-M LX  
2-5  
 
2.2.4  
Menu items  
The highlighted item on the menu bar displays the specific items for that menu. For example,  
selecting Main shows the Main menu items.  
The other items (Advanced, Power, Boot, Tools, and Exit) on the menu bar have their  
respective menu items.  
2.2.5  
Submenu items  
A solid triangle before each item on a menu screen means that the item has a submenu. To  
display the submenu, select the item and press <Enter>.  
2.2.6  
Configuration fields  
These fields show the values for the menu items. If an item is user- configurable, you can  
change the value of the field opposite the item. You cannot select an item that is not  
user-configurable.  
A configurable field is enclosed in brackets, and is highlighted when selected. To change the  
value of a field, select it then press <Enter> to display a list of options. Refer to 2.2.7 Pop-up  
window.  
M5A78L-M LX BIOS Setup  
Version 0203  
Main  
Advanced  
Power  
Boot  
Tools  
Exit  
2.2.7  
Pop-up window  
Power Settings  
Use [ENTER], [TAB] or  
[SHIFT-TAB] to select  
a field.  
Select a menu item then press  
<Enter> to display a pop-up  
window with the configuration  
options for that item.  
Suspend Mode  
ACPI 2.0 Support  
ACPI APIC support  
[Auto]  
[Disabled]  
Options  
[Enabled]  
Use [+] or [-] to  
configure system  
Time.  
S1 (POS) only  
S3 only  
Auto  
APM Configuration  
Hardware Monitor  
Anti Surge Support  
[Enabled]  
Select Screen  
Select Item  
+-  
F1  
Change Field  
General Help  
F10 Save and Exit  
ESC Exit  
2.2.8  
Scroll bar  
A scroll bar appears on the right side  
of a menu screen when there are  
items that do not fit on the screen.  
Press the <Up> / <Down> arrow  
keys or <Page Up> /<Page Down>  
keys to display the other items on  
the screen.  
v02.61 (C)Copyright 1985-2011, American, AmericanMegatrends, Inc.  
Pop-up window  
Scroll bar  
2.2.9  
General help  
At the top right corner of the menu screen is a brief description of the selected item.  
2-6  
Chapter 2: BIOS information  
 
2.3  
Main menu  
When you enter the BIOS Setup program, the Main menu screen appears, giving you an  
overview of the basic system information.  
Refer to section 2.2.1 BIOS menu screen for information on the menu screen items and  
how to navigate through them.  
M5A78L-M LX BIOS Setup  
Boot Tools Exit  
Version 0203  
Main  
Advanced  
Power  
Main Settings  
Use [ENTER], [TAB]  
System Time  
System Date  
[19:34:30]  
[Thu 03/05/2011]  
or [SHIFT-TAB] to  
select a field.  
SATA1  
:[Not Detected]  
:[Not Detected]  
:[Not Detected]  
:[Not Detected]  
:[Not Detected]  
:[Not Detected]  
Use [+] or [-] to  
configure system  
Time.  
SATA2  
SATA3  
SATA4  
SATA5  
SATA6  
SATA Configuration  
Select Screen  
Select Item  
System Information  
Change Field  
+-  
Tab  
F1  
Select Field  
General Help  
Save and Exit  
Exit  
F10  
ESC  
v02.61 (C)Copyright 1985-2011, American Megatrends, Inc.  
2.3.1  
System Time [xx:xx:xx]  
Allows you to set the system time.  
2.3.2  
System Date [Day xx/xx/xxxx]  
Allows you to set the system date.  
2.3.3  
SATA_1~6  
While entering Setup, the BIOS automatically detects the presence of SATA devices. There  
is a separate submenu for each SATA device. Select a device item then press <Enter> to  
display the SATA device information.  
The BIOS automatically detects the values opposite the dimmed items (Device, Vendor,  
Size, LBA Mode, Block Mode, PIO Mode, Async DMA, Ultra DMA, and SMART monitoring).  
These values are not user-configurable. These items show Not Detected if no SATA device is  
installed in the system.  
Type [Auto]  
Selects the type of SATA drive. Setting this item to [Auto] allows automatic selection of the  
appropriate SATA device type. Select [CDROM] if you are specifically configuring a CD-ROM  
drive. Select [ARMD] (ATAPI Removable Media Device) if your device is either a ZIP, LS-120,  
or MO drive. Configuration options: [Not Installed] [Auto] [CDROM] [ARMD]  
This item only appears in the SATA_5/6 menus.  
ASUS M5A78L-M LX  
2-7  
 
LBA/Large Mode [Auto]  
Enables or disables the LBA mode. Setting this item to [Auto] enables the LBA mode if the  
device supports this mode, and if the device was not previously formatted with LBA mode  
disabled. Configuration options: [Disabled] [Auto]  
Block (Multi-Sector Transfer) M [Auto]  
Enables or disables data multi-sectors transfers. When this item is set to [Auto], the data  
transfer from and to the device occurs multiple sectors at a time if the device supports multi-  
sector transfer feature. When this item is set to [Disabled], the data transfer from and to the  
device occurs one sector at a time. Configuration options: [Disabled] [Auto]  
PIO Mode [Auto]  
Selects the PIO mode. Configuration options: [Auto] [0] [1] [2] [3] [4]  
DMA Mode [Auto]  
Selects the DMA mode. Configuration options: [Auto]  
SMART Monitoring [Auto]  
Sets the Smart Monitoring, Analysis, and Reporting Technology.  
Configuration options: [Auto] [Disabled] [Enabled]  
32Bit Data Transfer [Enabled]  
Enables or disables 32-bit data transfer. Configuration options: [Disabled] [Enabled]  
2.3.4  
SATA Configuration  
The SATA Configuration menu allows you to configure your storage devices. Select an item  
then press <Enter> to display the submenu.  
OnChip SATA Channel [Enabled]  
Enables or disables the onboard channel SATA port. Configuration options: [Disabled]  
[Enabled]  
The following two items only appear when you set OnChip SATA Channel to [Enabled].  
SATA Port1 - Port4 [IDE]  
Allows you to set the SATA configuration.  
[IDE]  
Set to [IDE] when you want to use the Serial ATA hard disk drives as  
Parallel ATA physical storage devices.  
[RAID]  
[AHCI]  
Set to [RAID] when you want to create a RAID configuration from the SATA  
hard disk drives.  
Set to [AHCI] when you want the SATA hard disk drives to use the AHCI  
(Advanced Host Controller Interface). The AHCI allows the onboard  
storage driver to enable advanced Serial ATA features that increases  
storage performance on random workloads by allowing the drive to  
internally optimize the order of commands.  
When this item is set to [AHCI], the information of the SATA connectors 1–6 can be seen  
only under the OS environment or during POST.  
For Windows® XP OS, you have to install the AHCI driver, so that you could use the  
SATA connectors 1–6 in AHCI mode under the OS environment.  
2-8  
Chapter 2: BIOS information  
 
SATA Port5 - Port6 [IDE]  
Setting this item to [IDE] instead of [RAID] or [AHCI] allows the system to recognize the  
optical dirves connected to the SATA connectors 5 or 6 when installing OS.  
If you use a SATA optical drive to run the OS installation disk, we strongly recommend that  
you install the optical dirve to the SATA connectors 5/6 and set them to [IDE] mode.  
2.3.5  
System Information  
This menu gives you an overview of the general system specifications. The BIOS  
automatically detects the items in this menu.  
BIOS Information  
Displays the auto-detected BIOS information.  
Processor  
Displays the auto-detected CPU specification.  
System Memory  
Displays the auto-detected system memory.  
2.4  
Advanced menu  
The Advanced menu items allow you to change the settings for the CPU and other system  
devices.  
Take caution when changing the settings of the Advanced menu items. Incorrect field  
values can cause the system to malfunction.  
M5A78L-M LX BIOS Setup  
Boot Tools Exit  
Version 0203  
Main  
Advanced  
Power  
Advanced Settings  
Adjust System  
Frequency/Voltage etc.  
JumperFree Configuration  
CPU Configuration  
Chipset  
Onboard Devices Configuration  
PCIPnP  
USB Configuration  
Select Screen  
Select Item  
+-  
Change Field  
Tab Select Field  
F1  
General Help  
F10 Save and Exit  
ESC Exit  
v02.61 (C)Copyright 1985-2011, American Megatrends, Inc.  
ASUS M5A78L-M LX  
2-9  
 
2.4.1  
JumperFree Configuration  
The items and configuration options in this menu may vary depending on the AMD CPU  
type.  
CPU OverClocking [Auto]  
Selects the CPU overclocking options to achieve desired CPU internal frequency.  
Configuration options: [Manual] [Auto] [Overclock Profile] [Test Mode]  
The following item only appears when you set CPU Overclocking to [Manual].  
CPU/HT Reference Clock (MHz) [200]  
Sets the CPU/HT Reference Clock. Configuration options: [Min.=200] [Max.=550]  
The following item only appears when you set CPU Overclocking to [Overclock Profile].  
Overclock Options [Auto]  
Selects the overclocking profile. Configuration options: [Auto] [Overclock 2%]  
[Overclock 5%] [Overclock 8%] [Overclock 10%]  
GPU Overclocking [Auto]  
Configures the GPU overclocking. Configuration options: [Auto] [Manual]  
The following item only appears when you set GPU Overclocking to [Manual].  
GPU Engine Clock [350]  
Sets the GPU Engine Clock. Configuration options: [Min.=150] [Max.=1000]  
PCIE Overclocking [Auto]  
Configures the PCIE overclocking. Configuration options: [Auto] [Manual]  
The following item only appears when you set PCIE Overclocking to [Manual].  
PCIE Clock [100]  
Sets the PCIE Clock. Configuration options: [Min.=100] [Max.=150]  
Processor Frequency Multiplier [Auto]  
Sets the processor frequency multiplier. Configuration options: [Auto] [x4.0 800MHz]  
[x4.5 900MHz] [x5.0 1000MHz] [x5.5 1100MHz] ~ [x13.0 2600MHz] [x13.5 2700MHz] [x14.0  
2800MHz] [x14.5 2900MHz] [x15.0 3000MHz]  
CPU/NB Frequency [Auto]  
Sets the CPU/Northbridge frequency. Configuration options: [Auto] [4.00x] [5.00x] [6.00x]  
[7.00x] [8.00x] [9.00x] [10.00x]  
CPU Over Voltage [Auto]  
Sets the CPU over voltage. The valid value ranges vary depending on your CPU model. Use  
<+> / <-> keys to adjust the ratio. Configuration options: [Auto]  
2-10  
Chapter 2: BIOS information  
 
VDDNB Over Voltage [Auto]  
Sets the VDDNB over voltage. The valid value ranges vary depending on your CPU model.  
Use <+> / <-> keys to adjust the ratio. Configuration options: [Auto]  
LoadLine Calibration [Auto]  
Sets the LoadLine. Configuration options: [Auto] [0%] [3.225%] [6.450%] [9.675%] [12.90%] ~  
[87.075%] [90.3%] [93.525%] [96.75%] [100%]  
If the system becomes unstable after changing the setting, set it back to [Auto] for safe  
mode.  
HT Link Frequency [Auto]  
Sets the HyperTransport link speed. Configuration options: [Auto] [200MHz] [400MHz]  
[600MHz] [800MHZ] [1000MHz] [1200MHz] [1400MHz] [1600MHz] [1800MHz] [2000MHz]  
HT Link Width [Auto]  
Sets the HyperTransport link width. Configuration options: [Auto] [8 Bit] [16 Bit]  
HT Over Voltage [Auto]  
Sets the HT over voltage. The values range from 1.20000V to 1.38000V with a 0.01500V  
increment. Use the <+> / <-> keys to adjust the value. Configuration options: [Auto]  
[Max. = 1.38000V] [Min. = 1.20000V]  
Memory Clock Mode [Auto]  
Sets the memory clock mode. Configuration options: [Auto] [Manual]  
The following item only appears when you set Memory Clock Mode to [Manual].  
Memclock Value [400MHz]  
Selects the DRAM frequency programming method.  
Configuration options: [400MHz] [533MHz] [667MHz] [800MHz]  
DRAM Timing Mode [Auto]  
Sets the DRAM timing mode. Configuration options: [Auto] [DCT 0] [DCT 1] [Both]  
The configuration options for some of the following items vary depending on the DIMMs you  
install on the motherboard.  
DRAM CAS# Latency [Auto]  
Configuration options: [Auto] [4 CLK] ~ [12 CLK]  
DRAM RAS# to CAS# Delay [Auto]  
Configuration options: [Auto] [5 CLK] ~ [12 CLK]  
DRAM RAS# PRE Time [Auto]  
Configuration options: [Auto] [5 CLK] ~ [12 CLK]  
DRAM RAS# ACT Time [Auto]  
Configuration options: [Auto] [15 CLK] ~ [30 CLK]  
ASUS M5A78L-M LX  
2-11  
DRAM READ to PRE Time [Auto]  
Configuration options: [Auto] [4 CLK] [5 CLK] [6 CLK] [7 CLK]  
DRAM Row Cycle Time [Auto]  
Configuration options: [Auto] [11 CLK] ~ [41 CLK]  
DRAM WRITE Recovery Time [Auto]  
Configuration options: [Auto] [5 CLK] [6 CLK] [7 CLK] [8 CLK] [10 CLK] [12 CLK]  
DRAM RAS# to RAS# Delay [Auto]  
Configuration options: [Auto] [4 CLK] [5 CLK] [6 CLK] [7 CLK]  
DRAM READ to WRITE Delay [Auto]  
Configuration options: [Auto] [3 CLK] ~ [17 CLK]  
DRAM WRITE to READ Delay(DD) [Auto]  
Configuration options: [Auto] [2 CLK] ~ [10 CLK]  
DRAM WRITE to READ Delay(SD) [Auto]  
Configuration options: [Auto] [4 CLK] [5 CLK] [6 CLK] [7 CLK]  
DRAM WRITE to WRITE Timing [Auto]  
Configuration options: [Auto] [3 CLK] ~ [10 CLK]  
DRAM READ to READ Timing [Auto]  
Configuration options: [Auto] [3 CLK] ~ [10 CLK]  
DRAM REF Cycle Time [Auto]  
Configuration options: [Auto] [90ns] [110ns] [160ns] [300ns] [350ns]  
DRAM Refresh Rate [Auto]  
Configuration options: [Auto] [Every 7.8ms] [Every 3.9ms]  
DRAM Command Rate [Auto]  
Configuration options: [Auto] [1T] [2T]  
Memory Over Voltage [Auto]  
Sets the memory over voltage. The values range from 1.3500V to 2.2050V with a 0.0150V  
increment. Use the <+> / <-> keys to adjust the value. Configuration options: [Auto] [Max. =  
2.2050V] [Min. = 1.3500V]  
Chipset Over Voltage [Auto]  
Sets the chipset over voltage. The values range from 1.10000V to 1.61000V with a 0.01500V  
increment. Use the <+> / <-> keys to adjust the value. Configuration options: [Auto]  
[Max. = 1.61000V] [Min. = 1.10000V]  
PCI/PCIe CLK Status [Enabled]  
Enables or disables clock for PCI/PCIe slot. Configuration options: [Disabled] [Enabled]  
2.4.2  
CPU Configuration  
The items in this menu show the CPU-related information that the BIOS automatically  
detects.  
2-12  
Chapter 2: BIOS information  
 
GART Error Reporting [Disabled]  
This option should remain disabled for the normal operation. The driver developer may  
enable it for testing purpose. Configuration options: [Disabled] [Enabled]  
Microcode Updation [Enabled]  
Enables or disables Microcode Updation. Configuration options: [Disabled] [Enabled]  
Secure Virtual Machine Mode [Disabled]  
Enables or disables Secure Virtual Machine Mode (SVM). Configuration options: [Disabled]  
[Enabled]  
Cool ‘n’ Quiet [Enabled]  
Enables or disables the AMD® Cool ‘n’ Quiet technology. Configuration options: [Enabled]  
[Disabled]  
C1E Support [Disabled]  
Enables or disables the CPU Enhanced Halt (C1E) function, a CPU power-saving function  
in system halt state. When this item is enabled, the CPU core frequency and voltage will be  
reduced during the system halt state to decrease power consumption.  
Configuration options: [Disabled] [Enabled]  
Advanced Clock Calibration [Disabled]  
Adjusts the processor’s overclocking capability. When this item is set to [Auto], the BIOS  
automatically adjusts this function. When this item is set to [All Cores], the processor has  
the best overclocking performance. When this item is set to [Per Core], the processor’s  
overclocking capability is enhanced. Configuration options: [Disabled] [Auto] [All Cores]  
[Per Core]  
The following items only appear when you set Advanced Clock Calibration to [Auto],  
[All Cores], or [Per Core].  
Unleashing Mode [Disabled]  
Enable the Unleashing Mode to get full computing power of the processor. However,  
this might make your system unstable depending on your processor’s overclocking  
capability. Configuration options: [Enabled] [Disabled]  
Active CPU Cores [Auto]  
Allows you to manually turn ON/OFF a process core. Configuration options: [Auto]  
[Manual]  
2nd / 3rd / 4th Core [On]  
These items only appear when you set Active CPU Cores to [Manual].  
Configuration options: [On] [Off]  
Value (All Cores) [-2%]  
This item only appears when you set Advanced Clock Calibration to [All Cores]. It  
allows you to set the overclocking percentage for all the processor cores as a whole.  
Configuration options: [0%] [+2%] [+4%] [+6%] [+8%] [+10%] [+12%] [-2%] [-4%]  
[-6%] [-8%] [-10%] [-12%]  
ASUS M5A78L-M LX  
2-13  
Value (Core 0) / (Core 1) / (Core 2) / (Core 3) [-2%]  
These items only appear when you set Advanced Clock Calibration to [Per Core]  
and allow you to set the overclocking percentage for each process core separately.  
Configuration options: [0%] [+2%] [+4%] [+6%] [+8%] [+10%] [+12%] [-2%] [-4%]  
[-6%] [-8%] [-10%] [-12%]  
2.4.3  
Chipset  
NorthBridge Configuration  
Memory Configuration  
Bank Interleaving [Auto]  
Allows you to enable the bank memory interleaving. Configuration options: [Disabled]  
[Auto]  
Channel Interleaving [XOR of Address bit]  
Allows you to enable the channel memory interleaving.  
Configuration options: [Disabled] [Address bits 6] [Address bits 12]  
[XOR of Address bits [20:16, 6]] [XOR of Address bits [20:16, 9]]  
Enable Clock to All DIMMs [Disabled]  
Enables unused Clocks to DIMMs even though memory slots are not populated.  
Configuration options: [Disabled] [Enabled]  
MemClk Tristate C3/ATLVID [Disabled]  
Allows you to enable or disable MemClk Tri-Stating during C3 and Alt VID.  
Configuration options: [Disabled] [Enabled]  
Memory Hole Remapping [Enabled]  
Allows you to enable or disable memory remapping around memory hole.  
Configuration options: [Disabled] [Enabled]  
DCT Unganged Mode [Always]  
Allows you to select the unganged DRAM mode (64-bit width).  
ECC Configuration  
ECC Mode [Disabled]  
Allows you to set the ECC mode. Configuration options: [Disabled] [Basic] [Good]  
Internal Graphics  
Primary Video Controller [GFX0-GPP-IGFX-PCI]  
Selects the primary display adapter. Configuration options: [GFX0-GPP-IGFX-PCI] [GPP-  
GFX0-IGFX-PCI] [PCI-GFX0-GPP-IGFX] [IGFX-GFX0-GPP-PCI]  
GFX0:primary video controller on a PCIe x16 slot  
GPP: primary video controller on a PCIe x1 slot  
IGFX: onboard display output port  
PCI: primary video controller on a PCI slot  
2-14  
Chapter 2: BIOS information  
 
UMA Frame Buffer Size [Auto]  
Selects the UMA frame buffer size. Configuration options: [Auto] [32MB] [64MB]  
[128MB] [256MB] [512MB] [1GB]  
The [512MB] option only appears when you install 1GB system memory or more.  
The [1GB] option only appears when you install 2GB system memory or more.  
Surround View [Auto]  
Disables or enables the Surround View function. Configuration options: [Auto] [Disabled]  
[Enabled]  
This item becomes user-configurable when you install an ATI graphics card into the  
PCIe x16 slot.  
Frame Buffer Location [Above 4G]  
Configuration options: [Below 4G] [Above 4G]  
2.4.4  
Onboard Device Configuration  
Serial Port1 Address [3F8/IRQ4]  
Allows you to select the Serial Port1 base address. Configuration options: [Disabled]  
[3F8/IRQ4][2F8/IRQ3] [3E8/IRQ4] [2E8/IRQ3]  
Parallel Port Address [378]  
Allows you to select the Parallel Port base addresses. Configuration options: [Disabled] [378]  
[278] [3BC]  
Parallel Port Mode [Normal]  
Allows you to select the Parallel Port mode. Configuration options: [Normal] [EPP] [ECP]  
[EPP+ECP]  
Parallel Port IRQ [IRQ7]  
Configuration options: [IRQ5] [IRQ7]  
HDAudio Controller [Enabled]  
Enables or disables the high definition audio controller. Configuration options: [Disabled]  
[Enabled]  
Front Panel Select [HD Audio]  
Configuration options: [AC97] [HD Audio]  
OnBoard LAN Controller [Enabled]  
Configuration options: [Disabled] [Enabled]  
ASUS M5A78L-M LX  
2-15  
 
2.4.5  
PCIPnP  
The PCI PnP menu items allow you to change the advanced settings for PCI/PnP devices.  
The menu includes setting IRQ and DMA channel resources for either PCI/PnP or legacy ISA  
devices, and setting the memory size block for legacy ISA devices.  
Take caution when changing the settings of the PCI PnP menu items. Incorrect field values  
can cause the system to malfunction.  
Plug and Play O/S [No]  
When this item is set to [No], BIOS configures all the devices in the system. When this item  
is set to [Yes] and if you install a Plug and Play operating system, the operating system  
configures the Plug and Play devices not required for boot. Configuration options: [No] [Yes]  
2.4.6  
USB Configuration  
The items in this menu allows you to change the USB-related features. Select an item then  
press <Enter> to display the configuration options.  
The Module Version and USB Devices Enabled items show the auto-detected values. If no  
USB device is detected, the item shows None.  
USB Functions [Enabled]  
Allows you to enable or disable the USB functions. Configuration options: [Disabled]  
[Enabled]  
USB 2.0 Controller [Enabled]  
Enables or disables USB 2.0 Controllers. Configuration options: [Disabled] [Enabled]  
Legacy USB Support [Auto]  
Allows you to enable or disable support for Legacy USB storage devices, including USB flash  
drives and USB hard drives. Setting to Auto allows the system to detect the presence of USB  
devices at startup. If detected, the USB controller legacy mode is enabled. If no USB device  
is detected, the legacy USB support is disabled. Configuration options: [Disabled] [Enabled]  
[Auto]  
USB 2.0 Controller Mode [HiSpeed]  
Allows you to configure the USB 2.0 controller in HiSpeed (480Mbps) or Full Speed  
(12Mbps). Configuration options: [FullSpeed] [HiSpeed]  
The following items only appear when a USB storage device is plugged in.  
USB Mass Storage Device Configuration  
USB Mass Storage Reset Delay [20 Sec]  
Sets the maximum time that the BIOS waits for the USB storage device to initialize.  
Configuration options: [10 Sec] [20 Sec] [30 Sec] [40 Sec]  
Emulation Type [Auto]  
Allows you to set the emulation type. Configuration options: [Auto] [Floppy]  
2-16  
Chapter 2: BIOS information  
 
2.5  
Power menu  
The Power menu items allow you to change the settings for the Advanced Configuration and  
Power Interface (ACPI) and the Advanced Power Management (APM). Select an item then  
press <Enter> to display the configuration options.  
M5A78L-M LX BIOS Setup  
Version 0203  
Main  
Advanced  
Power  
Boot  
Tools  
Exit  
Select the ACPI state  
used for System  
Suspend.  
Power Settings  
Suspend Mode  
ACPI 2.0 Support  
ACPI APIC Support  
[Auto]  
[Enabled]  
[Enabled]  
APM Configuration  
HW Monitor Configuration  
Anti Surge Support  
[Enabled]  
Select Screen  
Select Item  
+-  
F1  
Change Option  
General Help  
F10 Save and Exit  
ESC Exit  
v02.61 (C)Copyright 1985-2011, American Megatrends, Inc.  
2.5.1  
Suspend Mode [Auto]  
Allows you to select the Advanced Configuration and Power Interface (ACPI) state to be used  
for system suspend. Configuration options: [S1 (POS) Only] [S3 Only] [Auto]  
2.5.2  
ACPI 2.0 Support [Enabled]  
Allows you to enable or disable the Advanced Configuration and Power Interface (ACPI) 2.0  
support. Configuration options: [Disabled] [Enabled]  
2.5.3  
ACPI APIC Support [Enabled]  
Allows you to enable or disable the Advanced Configuration and Power Interface (ACPI)  
support in the Advanced Programmable Interrupt Controller (APIC). When set to Enabled, the  
ACPI APIC table pointer is included in the RSDT pointer list. Configuration options: [Disabled]  
[Enabled]  
2.5.4  
APM Configuration  
Restore on AC Power Loss [Power Off]  
When this item is set to [Power Off], the system goes into off state after an AC power  
loss. When this item is set to [Power On], the system goes on after an AC power loss.  
Configuration options: [Power Off] [Power On] [Last State]  
Power on From S5 By PME# [Disabled]  
Enables or disables PME wake from sleep states. Configuration options: [Disabled] [Enabled]  
Power on From S5 By Ring [Disabled]  
Enables or disables ring to generate a wake event. Configuration options: [Disabled]  
[Enabled]  
ASUS M5A78L-M LX  
2-17  
 
Power on By PS/2 Keyboard [Disabled]  
Enables or disables PS/2 Keyboard to generate a wake event.  
Configuration options: [Disabled] [Space Bar] [Power Key] [Ctrl-Esc]  
Power on From S5 By RTC Alarm [Disabled]  
Enables or disables RTC to generate a wake event. Configuration options: [Disabled]  
[Enabled]  
2.5.5  
HW Monitor Configuration  
CPU Temperature [xxxºC/xxxºF] or [Ignored]  
MB Temperature [xxxºC/xxxºF] or [Ignored]  
The onboard hardware monitor automatically detects and displays the motherboard and CPU  
temperatures. Select Ignored if you do not wish to display the detected temperatures.  
CPU / Chassis Fan Speed [N/A], [xxxxRPM], or [Ignored]  
The onboard hardware monitor automatically detects and displays the CPU / Chassis fan  
speeds in rotations per minute (RPM). If the fan is not connected to the motherboard, the field  
shows N/A. Select [gnored] if you do not want the detected speed to be displayed.  
VCORE Voltage, 3.3V Voltage, 5V Voltage, 12V Voltage [xx.xxxV] or [Ignored]  
The onboard hardware monitor automatically detects the voltage output through the onboard  
voltage regulators.  
CPU Q-Fan Function [Enabled]  
Enables or disables the ASUS Q-Fan feature that smartly adjusts the CPU fan speeds for  
more efficient system operation. Configuration options: [Disabled] [Enabled]  
The following item only appears when you set CPU Q-Fan Function to [Enabled].  
CPU Fan Speed Low Limit [200 RPM]  
Allows you to manually set a lower limit for the CPU fan speed. If the CPU fan speed is  
below the specified limit, the system sends out warning beeps. Configuration options:  
[500 RPM] [400 RPM] [300 RPM] [200 RPM] [100 RPM] [Ignored]  
CPU Q-Fan Mode [Standard]  
Allows you to set the appropriate performance level of the CPU fan.  
[Standard]  
Sets to [Standard] to make the CPU fan automatically adjust depending  
on the CPU temperature.  
[Silent]  
[Turbo]  
[Manual]  
Sets to [Silent] to minimize the fan speed for quiet CPU fan operation.  
Set to [Turbo] to achieve maximum CPU fan speed.  
Allows you to individually set the CPU fan parameters.  
2.5.6  
Anti Surge Support [Enabled]  
Allows you to enable or disable the Anti-Surge protection feature.  
2-18  
Chapter 2: BIOS information  
 
2.6  
Boot menu  
The Boot menu items allow you to change the system boot options. Select an item then  
press <Enter> to display the submenu.  
M5A78L-M LX BIOS Setup  
Boot Tools Exit  
Version 0203  
Main  
Advanced  
Power  
Specifies the Boot  
Device Priority  
sequence.  
Boot Settings  
Boot Device Priority  
A virtual floppy disk  
drive (Floppy Drive B:)  
may appear when you set  
the CD-ROM drive as the  
first boot device.  
Boot Settings Configuration  
Security  
Select Screen  
Select Item  
Enter Go to Sub Screen  
F1  
F10  
ESC  
General Help  
Save and Exit  
Exit  
v02.61 (C)Copyright 1985-2011, American Megatrends, Inc.  
2.6.1  
Boot Device Priority  
1st ~ xxth Boot Device  
These items specify the boot device priority sequence from the available devices. The  
number of device items that appears on the screen depends on the number of devices  
installed in the system. Configuration options: [Removable Dev.] [Hard Drive]  
[ATAPI CD-ROM] [Disabled]  
To select the boot device during system startup, press <F8> when ASUS logo appears.  
To access Windows OS in Safe Mode, do any of the following:  
Press <F5> when ASUS logo appears.  
Press <F8> after POST.  
2.6.2  
Boot Settings Configuration  
Quick Boot [Enabled]  
Enabling this item allows the BIOS to skip some power on self tests (POST) while booting  
to decrease the time needed to boot the system. When this item is set to [Disabled], BIOS  
performs all the POST items. Configuration options: [Disabled] [Enabled]  
Full Screen Logo [Enabled]  
Enables or disables the full screen logo display feature. Configuration options: [Disabled]  
[Enabled]  
Set this item to [Enabled] to use the ASUS MyLogo2™ feature.  
ASUS M5A78L-M LX  
2-19  
 
AddOn ROM Display Mode [Force BIOS]  
Sets the display mode for option ROM. Configuration options: [Force BIOS] [Keep Current]  
Bootup Num-Lock [On]  
Selects the power-on state for the NumLock. Configuration options: [Off] [On]  
Wait for ‘F1’ If Error [Enabled]  
When this item is set to [Enabled], the system waits for the F1 key to be pressed when error  
occurs. Configuration options: [Disabled] [Enabled]  
Hit ‘DEL’ Message Display [Enabled]  
When this item is set to [Enabled], the system displays the message Press DEL to run  
Setup during POST. Configuration options: [Disabled] [Enabled]  
2.6.3  
Security  
The Security menu items allow you to change the system security settings. Select  
an item then press <Enter> to display the configuration options.  
Change Supervisor Password  
Select this item to set or change the supervisor password. The Supervisor Password item  
on top of the screen shows the default Not Installed. After you set a password, this item  
shows Installed.  
To set a Supervisor Password:  
1.  
Select the Change Supervisor Password item and press <Enter>.  
2.  
On the password box, key in a password containing up to six letters, or numbers, or  
both, then press <Enter>.  
3.  
Confirm the password when prompted.  
The message Password Installed appears after you successfully set your password.  
To change the supervisor password, follow the same steps as in setting a supervisor  
password.  
To clear the supervisor password, select the Change Supervisor Password then press  
<Enter> twice. The message Password uninstalled appears.  
If you forget your BIOS password, you can clear it by erasing the CMOS Real Time Clock  
(RTC) RAM. See section 1.9 Jumpers for information on how to erase the RTC RAM.  
2-20  
Chapter 2: BIOS information  
 
After you have set a supervisor password, the other items appear to allow you to change  
other security settings.  
User Access Level [Full Access]  
This item allows you to select the access restriction to the Setup items. Configuration options:  
[No Access] [View Only] [Limited] [Full Access]  
No Access prevents user access to the Setup utility.  
View Only allows access but does not allow change to any field.  
Limited allows changes only to selected fields, such as Date and Time.  
Full Access allows viewing and changing all the fields in the Setup utility.  
Change User Password  
Select this item to set or change the user password. The User Password item on top of the  
screen shows the default Not Installed. After you set a password, this item shows Installed.  
To set a User Password:  
1.  
Select the Change User Password item and press <Enter>.  
2.  
On the password box, key in a password containing up to six letters, or numbers, or  
both, then press <Enter>.  
3.  
Confirm the password when prompted.  
The message “Password Installed” appears after you set your password successfully.  
To change the user password, follow the same steps as in setting a user password.  
Clear User Password  
Select this item to clear the user password.  
Password Check [Setup]  
When set to [Setup], BIOS checks for user password when accessing the Setup utility. When  
set to [Always], BIOS checks for user password both when accessing Setup and booting the  
system. Configuration options: [Setup] [Always]  
ASUS M5A78L-M LX  
2-21  
2.7  
Tools menu  
The Tools menu items allow you to configure options for special functions. Select an item  
then press <Enter> to display the sub-menu.  
M5A78L-M LX BIOS Setup  
Boot Tools Exit  
Version 0203  
Press ENTER to run  
the utility to select  
and update BIOS. This  
utility supports:  
1.FAT 12/16/32 (r/w)  
2.NTFS (read only)  
3.CD-DISC (read only)  
Main  
Advanced  
Power  
Tools Settings  
ASUS EZ Flash 2  
ASUS O.C. Profile  
Select Screen  
Select Item  
Enter Go to Sub  
Screen  
F1  
General Help  
F10 Save and Exit  
ESC Exit  
v02.61 (C)Copyright 1985-2011, American Megatrends, Inc.  
2.7.1  
ASUS EZ Flash 2  
Allows you to run ASUS EZ Flash 2. When you press <Enter>, a confirmation message  
appears. Use the left/right arrow key to select between [Yes] or [No], then press <Enter> to  
confirm your choice. See section 2.1.2 for details.  
2.7.2  
ASUS O.C. Profile  
This item allows you to store or load multiple BIOS settings.  
Add Your CMOS Profile  
Allows you to save the current BIOS file to the BIOS Flash. In the Name sub-item, key in  
your profile name and press <Enter>, and then choose a profile number to save your CMOS  
settings in the Save to sub-item.  
Load CMOS Profiles.  
Allows you to load the previous BIOS settings saved in the BIOS Flash. Press <Enter> to  
load the file.  
Start O.C. Profile  
Allows you to run the utility to save and load CMOS. Press <Enter> to run the utility.  
This function can support devices such as a USB flash disk with FAT 32/16 format and  
single partition only.  
DO NOT shut down or reset the system while updating the BIOS to prevent the system  
boot failure!  
We recommend that you update the BIOS file only coming from the same memory/CPU  
configuration and BIOS version.  
Only the CMO file can be loaded.  
2-22  
Chapter 2: BIOS information  
 
2.8  
Exit menu  
The Exit menu items allow you to load the optimal or failsafe default values for the BIOS  
items, and save or discard your changes to the BIOS items.  
M5A78L-M LX BIOS Setup  
Boot Tools Exit  
Version 0203  
Main Advanced  
Exit Options  
Power  
Exit system setup  
after saving the  
cahnges.  
Exit & Save Changes  
Exit & Discard Changes  
Discard Changes  
F10 key can be used  
for this operation.  
Load Setup Defaults  
Pressing <Esc> does not immediately exit this menu. Select one of the options from this  
menu or <F10> from the legend bar to exit.  
Exit & Save Changes  
Once you are finished making your selections, choose this option from the Exit menu to  
ensure the values you selected are saved to the CMOS RAM. An onboard backup battery  
sustains the CMOS RAM so it stays on even when the PC is turned off. When you select this  
option, a confirmation window appears. Select OK to save changes and exit.  
Exit & Discard Changes  
Select this option only if you do not want to save the changes that you made to the Setup  
program. If you made changes to fields other than System Date, System Time, and  
Password, the BIOS asks for a confirmation before exiting.  
Discard Changes  
This option allows you to discard the selections you made and restore the previously saved  
values. After selecting this option, a confirmation appears. Select OK to discard any changes  
and load the previously saved values.  
Load Setup Defaults  
This option allows you to load the default values for each of the parameters on the Setup  
menus. When you select this option or if you press <F5>, a confirmation window appears.  
Select OK to load default values. Select Exit & Save Changes or make other changes  
before saving the values to the non-volatile RAM.  
ASUS M5A78L-M LX  
2-23  
 
2-24  
Chapter 2: BIOS information  
ASUS contact information  
ASUSTeK COMPUTER INC.  
Address  
Telephone  
Fax  
E-mail  
Web site  
15 Li-Te Road, Peitou, Taipei, Taiwan 11259  
+886-2-2894-3447  
+886-2-2890-7798  
Technical Support  
Telephone  
+86-21-38429911  
Online support  
support.asus.com  
ASUS COMPUTER INTERNATIONAL (America)  
Address  
Telephone  
Fax  
800 Corporate Way, Fremont, CA 94539, USA  
+1-510-739-3777  
+1-510-608-4555  
usa.asus.com  
Web site  
Technical Support  
Telephone  
Support fax  
+1-812-282-2787  
+1-812-284-0883  
support.asus.com  
Online support  
ASUS COMPUTER GmbH (Germany and Austria)  
Address  
Harkort Str. 21-23, D40880 Ratingen, Germany  
Fax  
+49-2102-9599-11  
Online contact  
Technical Support  
Component Telephone  
System/Notebook /Eee/LCD Telephone  
Support Fax  
+49-1805-010923  
+49-1805-010920  
+492102959911  
Online support  
Website  

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