M4A77T
Contents
iii
Contents
iv
Contents
v
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.
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.
vi
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.
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.
vii
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
M4A77T specifications summary
CPU
AMD® Socket AM3 for AMD® Phenom™ II / Athlon™ II /
Sempron™ 100 series processors
Supports AMD® 45nm CPU
Supports CPU up to 140W
Chipset
AMD® 770 / SB710
Front Side Bus
Memory
Up to 5200MT/s HyperTransport™ 3.0 interface
Dual-channel memory architecture
4 x 240-pin DIMM slots support maximum 16GB unbuffered ECC
and non-ECC DDR3 1800(O.C.)/1600(O.C.)/1333/1066MHz
memory modules
* Refer to www.asus.com for the latest Memory QVL (Qualified
Vendors List).
** When you install a total memory of 4GB or more, Windows®
32-bit operating system may only recognize less than 3GB. We
recommend a maximum of 3GB system memory if you are
using a Windows® 32-bit operating system.
Expansion slots
Storage / RAID
Audio
1 x PCIe x16 slot
2 x PCIe x1 slots
3 x PCI slots
1 x Ultra DMA 133/100/66 connector
6 x Serial ATA 3Gb/s connectors support RAID 0, RAID 1,
RAID 0+1 and JBOD configurations
VIA® VT1708S High Definition Audio 8-channel CODEC
* Use the chassis with HD audio module in the front panel to
support 8-channel audio output.
Supports Jack-detection, Multi-streaming, and Front Panel
Jack-Retasking technologies
USB
LAN
Supports up to 12 USB 2.0/1.1 ports (6 ports at mid-board, 6 ports
at the back panel)
Realtek® RTL8112L PCIe Gigabit LAN controller featuring AI NET 2
ASUS unique
features
ASUS CrashFree BIOS 3
ASUS AI NET 2
ASUS Q-Fan
ASUS EZ Flash 2
ASUS MyLogo 2
MemOK!
ACC Support
ASUS Turbo Key
ASUS Express Gate
ASUS EPU-4 Engine
(continued on the next page)
ix
M4A77T specifications summary
ASUS exclusive
overclocking
features
Intelligent overclocking tools:
– Turbo Key
SFS (Stepless Frequency Selection):
– FSB frequency tuning from 200MHz up to 550MHz at
1MHz increment
– PCIe frequency tuning from 100MHz up to 150MHz at
1MHz increment
Overclocking protection:
– ASUS C.P.R. (CPU Parameter Recall)
Back panel I/O ports
Internal connectors
1 x PS/2 Keyboard / Mouse Combo port
1 x LPT port
1 x COM port
1 x LAN (RJ-45) port
6 x USB 2.0/1.1 ports
3 x audio jacks
3 x USB 2.0/1.1 connectors support additional
6 USB 2.0/1.1 ports
1 x IDE connector
6 x Serial ATA connectors
1 x Front panel audio connector
1 x System panel connector
1 x S/PDIF out connector
1 x CPU fan connector
1 x Chassis fan connector
1 x MemOK! button
1 x 24-pin EATX power connector
1 x 4-pin ATX 12V power connector
BIOS
8Mb Flash ROM, AMI BIOS, PnP, DMI 2.0, WfM 2.0, ACPI 2.0a,
SM BIOS 2.5
Accessories
1 x Ultra DMA 133/100/66 cable
2 x Serial ATA cables
1 x I/O shield
1 x User Manual
Support DVD
Drivers
ASUS PC Probe II
ASUS Express Gate
ASUS Update
Anti-Virus software (OEM version)
Form factor
ATX form factor: 12 in x 8.4 in (30.5 cm x 21.3 cm)
* Specifications are subject to change without notice.
x
Chapter 1
Product introduction
1.1
Welcome!
Thank you for buying an ASUS® M4A77T 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 M4A77T motherboard
2 x Serial ATA cables
1 x Ultra DMA 133/100/66 cable
Accessories
1 x I/O shield
Application DVD
Documentations
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® 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 1333
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 45nm manufacturing process.
ASUS M4A77T
1-1
AMD® 770 Chipset
The AMD® 770 Chipset is designed to support up to 5200MT/s
HyperTransport™ 3.0 (HT 3.0) interface speed and PCI Express 2.0
x16 graphics. It is optimized with AMD’s latest AM3 multi-core CPUs to
provide excellent system performance and overclocking capabilities.
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 1800(O.C.) support
This motherboard supports DDR3 memory that features data transfer
rates of 1800 (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.
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.
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.
1.3.2
Innovative ASUS features
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 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.
1-2
Chapter 1: Product introduction
MemOK!
Memory compatibility is among the top concerns during computer
upgrades. Worry no more. MemOK! is the fastest memory booting
solution today. This remarkable memory rescue tool requires nothing but
a push of a button to patch memory issues and get your system up and
running in no time. The technology is able to determine failsafe settings
that can dramatically improve your system booting success.
ASUS Express Gate
ASUS Express Gate is an instant-on environment that gives you quick
access to the Internet. Five seconds after powering on your computer,
you can instantly surf the Internet without entering the Windows® OS.
•
ASUS Express Gate supports installation on SATA HDDs, USB HDDs and flash
drives with at least 1.2GB free disk space. When installing it on USB HDDs or
flash drives, connect the drives to the motherboard USB port before turning on the
computer.
•
•
The actual boot time depends on the system configuration.
ASUS Express Gate supports file uploading from SATA HDDs, ODDs and USB
drives. It supports file downloading to USB drives only.
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 MyLogo 2™
Turn your favorite photos into 256-color boot logos to personalize your
system.
ASUS Q-Fan
ASUS Q-Fan technology intelligently adjusts CPU fan speeds according
to system loading to ensure a quiet, cool, and efficient operation.
ASUS AI NET 2
ASUS AI NET 2 remotely detects the cable connection immediately after
you turn on the system and any faulty cable connections are reported
back up to 100 meters at 1 meter accuracy.
ASUS M4A77T
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.
Green ASUS
This motherboard and its packaging comply with the European Union’s
Restriction on the use of Hazardous Substances (RoHS). This is in line
with the ASUS vision of creating environment-friendly and recyclable
products/packaging to safeguard consumers’ health while minimizing the
impact on the environment.
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.
1-4
Chapter 1: Product introduction
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.
ASUS M4A77T
1-5
1.5.3
Motherboard layout
1.5.4
Layout contents
Connectors/Jumpers/Slots/LED
Page Connectors/Jumpers/Slots/LED
Page
1. CPU and chassis fan connectors
(4-pin CPU_FAN and 3-pin CHA_FAN)
1-20 8. System panel connector (20-8 pin PANEL)
1-24
2. ATX power connectors (24-pin EATXPWR,
4-pin ATX12V)
1-21 9. USB connectors (10-1 pin USB78, USB910,
USB1112)
1-26
3. CPU Socket AM3
1-7
10. Clear RTC RAM (3-pin CLRTC)
1-17
1-4
4. DDR3 DIMM slots
1-10 11. Onboard power LED (SB_PWR)
5. MemOK! switch
1-18 12. Digital audio connector (4-1 pin SPDIF_OUT) 1-25
6. IDE connector (40-1 pin PRI_IDE)
7. SATA connectors (7-pin SATA1~6)
1-22 13. Front panel audio connector (10-1 pin AAFP)
1-23
1-25
1-6
Chapter 1: Product introduction
1.6
Central Processing Unit (CPU)
This motherboard comes with an AM3 socket designed for AMD® Phenom™ II / Athlon™ II /
Sempron™ 100 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.
Socket lever
2.
Press the lever sideways to unlock the
socket, then lift it up to a 90°-100° angle.
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
ASUS M4A77T
1-7
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.
DO NOT forget to connect the CPU fan connector! Hardware monitoring errors can occur if
you fail to plug this connector.
1-8
Chapter 1: Product introduction
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
ASUS M4A77T
1-9
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.
5.
Push down the retention bracket lock on the retention mechanism to secure the
heatsink and fan to the module base.
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
This motherboard comes with four Double Data Rate 3 (DDR3) Dual Inline Memory Modules
(DIMM) sockets. A DDR3 module has the same physical dimensions as a DDR2 DIMM but
is notched differently to prevent installation on a DDR2 DIMM socket. DDR3 modules are
developed for better performance with less power consumption. The figure illustrates the
location of the DDR3 DIMM sockets:
Channel
Sockets
Channel A
Channel B
DIMM_A1 and DIMM_A2
DIMM_B1 and DIMM_B2
1-10
Chapter 1: Product introduction
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.
M4A77T Motherboard Qualified Vendors Lists (QVL)
DDR3-1866(O.C.)MHz capability
DIMM support
SS/
DS
Chip
Brand
Vendor
Part No.
Size
Chip NO.
CL
A*
B*
C*
Kingston
KHX14900D3K3/3GX(XMP)
3072MB(kit of 3)
SS
N/A
Heat-Sink Package
9-9-9-27
•
•
DDR3-1800(O.C.)MHz capability
Vendor
Part No.
Size
SS/
DS
Chip
Brand
Chip NO.
CL
DIMM support
A*
•
B*
•
C*
Corsair
CM3X2G1800C8D
2048MB
DS
SS
SS
DS
N/A
N/A
N/A
N/A
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
N/A
Kingston
Kingston
Kingston
KHX14400D3K2/2G
2048MB(Kit of 2)
3072MB(kit of 3)
4096MB(kit of 2)
8-8-8-24
9-9-9-27
8-8-8-24
•
•
KHX14400D3K3/3GX(XMP)
KHX14400D3K2/2GN(EPP)
•
•
•
ASUS M4A77T
1-11
DDR3-1600(O.C.)MHz capability
DIMM support
SS/
DS
Chip
Brand
Vendor
Part No.
Size
Chip NO.
CL
A*
B*
C*
A-Data
AD31600X002GMU
4096MB(Kit of 2)
2048MB(Kit of 2)
3072MB(Kit of 3)
3072MB(Kit of 3)
6144MB(Kit of 3)
6144MB(Kit of 3)
6144MB(Kit of 3)
2048MB(Kit of 2)
2048MB
DS
SS
SS
SS
DS
DS
DS
SS
DS
DS
SS
DS
SS
DS
DS
N/A
N/A
N/A
N/A
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
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
7-7-7-20
9-9-9-24
8-8-8-24
9-9-9-28
8-8-8-24
8-8-8-24
8-8-8-24
9-9-9-24
8-8-8-21
9-9-9-24
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Corsair
CM3X1G1600C9DHX
•
•
•
•
•
•
CRUCIAL
CRUCIAL
Crucial
BL12864BA1608.8SFB(XMP)
BL12864BE2009.8SFB3(EPP)
BL25664TB1608.K16SF(XMP)
BL25664TG1608.K16SF(XMP)
BL25664TR1608.K16SF(XMP)
F3-12800CL9D-2GBNQ
F3-12800CL8T-6GBHK
F3-12800CL9T-6GBNQ
FLGD45F-B8KG9
Crucial
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Crucial
G.SKILL
G.SKILL
G.SKILL
kingmax
kingmax
Kingston
Kingston
Kingston
6144MB(Kit of 3)
1024MB
kingmax KFB8FNGXF-ANX-12A N/A
kingmax KFB8FNGXF-ANX-12A N/A
FLGE85F-B8KG9
2048MB
KHX12800D3LLK3/3GX(XMP)
KHX12800D3K2/4G
3072MB(kit of 3)
4096MB(kit of 2)
6144MB(Kit of 3)
N/A
N/A
N/A
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
8-8-8-24
9-9-9-27
8-8-8-24
KHX12800D3LLK3/6GX(XMP)
We recommend that you install the DDR3 1600+ memory modules on the blue slots for
better overclocking performance.
DDR3-1333MHz capability
DIMM support
SS/
DS
Vendor
Part No.
Size
Chip Brand Chip NO.
CL
A*
B*
•
C*
A-Data
A-Data
Apacer
Apacer
Corsair
Corsair
AD31333001GOU
AD31333002GOU
78.01GC6.9L0
1024MB
2048MB
1024MB
2048MB
1024MB
1024MB
SS
DS
SS
DS
SS
SS
A-Data
A-Data
Apacer
Apacer
N/A
AD30908C8D-151C E0906
N/A
N/A
9
•
•
•
•
•
•
AD30908C8D-151C E0903
AM5D5808AEWSBG0914E
AM5D5808AEWSBG0908D
Heat-Sink Package
•
•
•
•
78.A1GC6.9L1
9
•
CM3X1024-1333C9DHX
CM3X1024-1333C9
N/A
N/A
•
N/A
Heat-Sink Package
•
•
•
•
•
3072MB(Kit
of 3)
CORSAIR
Corsair
TR3X3G1333C9
SS
DS
SS
N/A
Heat-Sink Package
Heat-Sink Package
Heat-Sink Package
9
•
•
•
•
•
•
CM3X1024-1333C9DHX
BL12864TA1336.8SFB1
1024MB
Corsair
N/A
N/A
2048MB(Kit
of 2)
CRUCIAL
6-6-6-20
3072MB(Kit
of 3)
Crucial
Crucial
Crucial
MT8JTF12864AY-1G4D1
BL25664ABA1336.16SFB1
MT16JTF25664AY-1G4D1
DS
DS
DS
Micron
N/A
9FD22D9JNM
9
•
•
•
•
•
•
•
•
•
4096MB(Kit
of 2)
Heat-Sink Package
8UD22D9JMN
6-6-6-20
9
6144MB(Kit
of 3 )
Micron
G.SKILL
G.SKILL
F3-10600CL8D-2GBHK
F3-10600CL9D-2GBPK
1024MB
1024MB
SS
SS
G.SKILL
G.SKILL
Heat-Sink Package
Heat-Sink Package
N/A
N/A
•
•
•
•
•
•
3072MB(Kit
of 3)
G.SkiLL
F3-10666CL7T-3GBPK
SS
N/A
Heat-Sink Package
7-7-7-18
•
•
•
3072MB(Kit
of 3)
G.SkiLL
G.SKILL
F3-10666CL9T-3GBNQ
F3-10600CL7D-2GBPI
SS
DS
N/A
Heat-Sink Package
Heat-Sink Package
9-9-9-24
N/A
•
•
•
•
•
•
1024MB
G.SKILL
(continued on the next page)
1-12
Chapter 1: Product introduction
DDR3-1333MHz capability
DIMM support
SS/
DS
Vendor
Part No.
Size
Chip Brand Chip NO.
CL
A*
B*
C*
G.SKILL
G.SKILL
F3-10600CL9D-2GBNQ
F3-10666CL9D-4GBPK
1024MB
2048MB
DS
DS
G.SKILL
G.SKILL
Heat-Sink Package
N/A
N/A
•
•
•
•
•
•
Heat-Sink Package
Heat-Sink Package
6144MB(Kit
of 3 )
G.SkiLL
G.SKILL
F3-10666CL7T-6GBPK
F3-1066CL9T-6GBNQ
DS
DS
N/A
N/A
7-7-7-18
9-9-9-24
•
•
•
•
•
•
6144MB(Kit
of 3)
Heat-Sink Package
GEIL
GEIL
DDR3-1333 CL9-9-9-24
GV34GB1333C7DC
1024MB
2048MB
SS
DS
N/A
N/A
Heat-Sink Package
Heat-Sink Package
9
•
•
•
•
•
•
7-7-7-24
6144MB(Kit
of 3 )
GEIL
DDR3-1333 CL9-9-9-24
DS
N/A
Heat-Sink Package
9
•
•
•
Kingston
Kingston
Micron
KVR1333D3N9/1G
1024MB
2048MB
1024MB
2048MB
SS
DS
SS
DS
elpida
elpida
Micron
Micron
J1108BABG-DJ-E
J1108BABG-DJ-E
8LD22D9JNM
9
•
•
•
•
•
•
•
•
•
•
•
•
KVR1333D3N9/2G
9
MT8JTF12864AY-1G4D1
MT16JTF25664AY-1G1D1
N/A
N/A
Micron
8LD22 D9JNM
3072MB(Kit
of 3)
Micron
Micron
OCZ
MT8JTF12864AY-1G4D1
MT16JTF25664AY-1G4D1
OCZ3P13334GK
DS
DS
DS
Micron
Micron
N/A
9FD22D9JNM
9
•
•
•
•
•
•
•
•
6144MB(Kit
of 3 )
8UD22D9JMN
9
4096MB(Kit
of 2)
Heat-Sink Package
7-7-7-20
Samsung
SAMSUNG
Samsung
Samsung
Samsung
Samsung
Samsung
M378B2873DZ1-CH9
M378B2873DZ1-CH9
M378B2873EH1-CH9
M391B2873DZ1-CH9
M378B5673DZ1-CH9
M378B5673EH1-CH9
M391B5673DZ1-CH9
1024MB
1024MB
1024MB
1024MB
2048MB
2048MB
2048MB
1024MB
1024MB
1024MB
2048MB
2048MB
1024MB
2048MB
1024MB
2048MB
2048MB
1024MB
1024MB
1024MB
1024MB
SS
SS
SS
SS
DS
DS
DS
SS
SS
SS
DS
DS
SS
DS
SS
DS
DS
DS
DS
SS
SS
Samsung
SAMSUNG
Samsung
Samsung
Samsung
Samsung
Samsung
N/A
K4B1G0846D-HCH9
SEC 846 HCH9 K4B1G08460
SEC 913 HCH9 K4B1G0846E
K4B1G0846D-HCH9
K4B1G0846D-HCH9
SEC 913 HCH9 K4B1G0846E
K4B1G0846D-HCH9
Heat-Sink Package
N/A
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
N/A
•
•
•
•
•
•
•
•
•
•
•
•
N/A
N/A
N/A
N/A
N/A
Super Talent W1333X2GB8
N/A
Transcend
Transcend
Transcend
Adata
SEC 813HCH9 K4B1G0846D
N/A
TS128MLK64V3U
N/A
TS128MLK72V3U
N/A
K4B1G0846D(ECC)
TS256MLK64V3U
N/A
SEC816HCH9K4B1G0846D
AD31333G002GMU
SLY3128M8-EDJ
N/A
N/A
N/A
Heat-Sink Package
8-8-8-24
N/A
ASint
ASint
DDRII1208-DJ 0844
DDRII1208-DJ 0844
8FD22D9JNM
ASint
SLY3128M8-EDJ
ASint
N/A
CENTURY
Kingtiger
Kingtiger
PATRIOT
Patriot
PC3-10600 DDR3-1333 9-9-9
2GB DIMM PC3-10666
KTG2G1333PG3
Micron
Samsung
N/A
N/A
•
•
SEC 904 HCH9 K4B1G0846D
Heat-Sink Package
N/A
•
•
•
•
•
•
N/A
PSD31G13332H
N/A
Heat-Sink Package
9
•
•
•
•
PSD31G13332
Patriot
N/A
PM64M8D38U-15
N/A
Takems
Takems
TMS1GB364D081-107EY
TMS1GB364D081-138EY
Heat-Sink Package
7-7-7-20
8-8-8-24
•
•
N/A
Heat-Sink Package
ASUS M4A77T
1-13
DDR3-1066MHz capability
DIMM support
SS/
DS
Chip
Brand
Vendor
Part No.
Size
Chip NO.
CL
A*
B*
•
C*
Elpida
EBJ51UD8BAFA-AC-E
EBJ51UD8BAFA-AE-E
F3-8500CL6D-2GBHK
KVR1066D3N7/1G
512MB
512MB
SS
SS
SS
SS
SS
DS
SS
DS
DS
SS
SS
SS
DS
DS
elpida
J5308BASE-AC-E
J5308BASE-AC-E
Heat-Sink Package
J1108BABG-DJ-E
J5308BASE-AE-E S
J1108BABG-DJ-E
8ED22D9JNL
N/A
N/A
N/A
7
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Elpida
elpida
•
G.SKILL
Kingston
Kingston
Kingston
Micron
1024MB
1024MB
1024MB
2048MB
1024MB
G.SKILL
elpida
•
•
KVR1066D3N7/1G
elpida
7
•
KVR1066D3N7/2G
elpida
7
•
MT8JTF12864AY-1G1D1
Micron
Micron
N/A
N/A
N/A
7-7-7-16
N/A
N/A
•
Micron
MT16JTF25664AY-1G1D1 2048MB
8LD22D9JNL
•
OCZ
OCZ3SOE10662GK
M378B2873CZ0-CF8
M378B2873CZ0-CG8
M378B2873EH1-CF8
2048MB(Kit of 2)
Heat-Sink Package
K4B1G0846C-ZCF8
K4B1G0846C-ZCG8
•
Samsung
Samsung
Samsung
1024MB
1024MB
1024MB
4096MB
2048MB
Samsung
Samsung
Samsung
•
•
SEC 901 HCF8 K4B1G0846E N/A
•
SAMSUNG M378B5273BH1-CF8
Kingtiger 2GB DIMM PC3-8500
SAMSUNG 846 K4B2G0846B-HCF8
Hynix H5TQ1G83AFP G7C
N/A
N/A
•
•
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.
•
C*: Supports two pairs of modules inserted into both the blue slots and the black slots
as two pairs of dual-channel memory configuration.
1-14
Chapter 1: Product introduction
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.
2.
Press the retaining clips outward to
unlock a DIMM socket.
DIMM notch
Align a DIMM on the socket such that
the notch on the DIMM matches the
DIMM slot key on the socket.
1
1
DIMM slot key
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.
ASUS M4A77T
1-15
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.
3.
Remove the system unit cover (if your motherboard is already installed in a chassis).
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.
3.
Assign an IRQ to the card.
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 slots
The PCI slots support 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 complies with the PCI
Express specifications.
1-16
Chapter 1: Product introduction
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.
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.
ASUS M4A77T
1-17
1.10
MemOK! switch
Onboard switch allows you to fine-tune performance when working on a bare or open-
case system. This is ideal for overclockers and gamers who continually change settings to
enhance system performance.
MemOK! switch
Installing DIMMs that are incompatible with the motherboard may cause system boot failure,
and the DRAM_LED near the MemOK! switch lights continuously. Press and hold the
MemOK! switch until the DRAM_LED starts blinking to begin automatic memory compatibility
tuning for successful boot.
•
•
•
The DRAM_LED also lights when the DIMM is not properly installed. Turn off the system
and reinstall the DIMM before using the MemOK! function.
Press the MemOK! switch under Windows® OS environment will reboot the computer
and start memory tuning.
During the tuning process, the system loads and tests failsafe memory settings. It takes
about 30 seconds for the system to test one set of failsafe settings. If the test fails,
the system reboots and test the next set of failsafe settings. The blinking speed of the
DRAM_LED increases, indicating different test processes.
•
If the installed DIMMs still fail to boot after the whole tuning process, the DRAM_LED
lights continuously. Replace the DIMMs with ones recommended in the Memory QVL
(Qualified Vendors Lists) in this user manual or on the ASUS website at
•
•
•
If you turn off the computer and replace DIMMs during the tuning process, the system
continues memory tuning after turning on the computer. To stop memory tuning, turn off
the computer and unplug the power cord for about 5–10 seconds.
If your system fail to boot due to BIOS overclocking, press the MemOK! switch to boot
and load BIOS default settings. A messgae will appear during POST reminding you that
the BIOS has been restored to its default settings.
We recommend that you download and update to the latest BIOS version from the
1-18
Chapter 1: Product introduction
1.11
Connectors
1.11.1
Rear panel ports
1.
PS/2 Keyboard/Mouse Combo port (purple). This port is for a PS/2 keyboard or PS/2
mouse.
2.
3.
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 on the next page for the function of the audio ports in
a 2, 4, 6, or 8-channel configuration.
ASUS M4A77T
1-19
Audio 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 the chassis with HD audio module in the front panel to support 8-channel audio output.
7.
8.
9.
USB 2.0 ports 1 and 2. These two 4-pin Universal Serial Bus (USB) ports are for
USB 2.0 devices.
USB 2.0 ports 3 and 4. These two 4-pin Universal Serial Bus (USB) ports are for USB
2.0 devices.
Serial port. This 9-pin COM1 port is for pointing devices or other serial devices.
10. USB 2.0 ports 5 and 6. These two 4-pin Universal Serial Bus (USB) ports are
available for connecting USB 2.0 devices.
1.11.2
Internal connectors
1.
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.
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 supports the ASUS Q-Fan feature.
1-20
Chapter 1: Product introduction
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.
•
•
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 ATX +12V 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.
ASUS M4A77T
1-21
3.
IDE connector (40-1 pin PRI_IDE)
The onboard IDE connector is for Ultra DMA 133/100/66 signal cable. There are three
connectors on each Ultra DMA 133/100/66 signal cable: blue, black, and gray. Connect
the blue connector to the motherboard’s IDE connector, then select one of the following
modes to configure your devices:
Drive jumper setting
Mode of device(s)
Cable connector
Black
Single device
Two devices
Cable-Select or Master
-
Master
Slave
Master
Slave
Black
Cable-Select
Gray
Master
Slave
Black or gray
•
•
Pin 20 on the IDE connector is removed to match the covered hole on the Ultra DMA
cable connector. This prevents incorrect insertion when you connect the IDE cable.
Use the 80-conductor IDE cable for Ultra DMA 133/100/66 IDE devices.
If any device jumper is set as “Cable-Select”, ensure that all other device jumpers have the
same setting.
1-22
Chapter 1: Product introduction
4.
Serial ATA connectors (7-pin SATA1~6)
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 133 MB/s (Ultra DMA133). If you install Serial ATA hard
disk drives, you can create RAID 0, RAID 1, and RAID 0+1 configurations through the
onboard SB710 chipset.
•
•
Install the Windows® XP Service Pack 2 or later versions before using Serial ATA.
If you intend to create a Serial ATA RAID set using these connectors, set the type of
the SATA connectors in the BIOS to [RAID]. See section 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 RAID/AHCI Supplementary Guide included
in the folder named Manual in the support DVD.
ASUS M4A77T
1-23
5.
System panel connector (20-8 pin PANEL)
This connector supports several chassis-mounted functions.
•
•
•
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 IDE_LED)
This 2-pin connector is for the HDD Activity LED. Connect the HDD Activity LED cable
to this connector. The IDE LED lights up or flashes when data is read from or written to
the HDD.
System warning speaker (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.
•
•
ATX power button/soft-off button (2-pin PWRSW)
This 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.
1-24
Chapter 1: Product introduction
6.
Digital audio connector (4-1 pin SPDIF_OUT)
This connector is for an additional Sony/Philips Digital Interface (S/PDIF) port.
Ensure that the audio device of Sound playback is VIA 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.
7.
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.
•
•
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
Devices Configuration for details.
•
The front panel audio I/O module is purchased separately.
ASUS M4A77T
1-25
8.
USB connectors (10-1 pin USB78, USB910, USB1112)
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.
Never connect a 1394 cable to the USB connectors. Doing so will damage the
motherboard!
The USB 2.0 module is purchased separately.
1-26
Chapter 1: Product introduction
1.12
Software support
1.12.1
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.
1.12.2
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. The DVD automatically displays the Drivers
menu if Autorun is enabled on your computer.
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 M4A77T
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
Next.
ASUS M4A77T
2-1
The ASUS Update utility is capable of updating itself through the Internet. Always update
the utility to avail all its features.
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.
Follow the onscreen instructions to complete the updating process.
3.
2.1.2
ASUS EZ Flash 2
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 V3.36
FLASH TYPE: MXIC 25L8005
Current ROM
BOARD: M4A77T
VER: 0305 (H:00 B:03)
DATE: 12/02/2009
Update ROM
BOARD: Unknown
VER: Unknown
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.
2-2
Chapter 2: BIOS information
•
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!
2.1.3
ASUS CrashFree BIOS
The ASUS CrashFree BIOS 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 removable device that contains the updated
BIOS file.
•
•
•
Before using this utility, rename the BIOS file in the removable device into
M4A77T.ROM.
The BIOS file in the support DVD may not be the latest version. Download the latest
BIOS file from the ASUS website at www.asus.com.
The removable devices that ASUS CrashFree BIOS support vary with motherboard
models. For motherboards without the floppy connector, prepare a USB flash disk before
using this utility.
Recovering the BIOS
To recover the BIOS:
1.
2.
Turn on the system.
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.
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.
4.
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.
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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>+<Del> 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
BIOS SETUP UTILITY
Main Advanced
Boot
Tools
Exit
Main Settings
Use [ENTER], [TAB]
or [SHIFT-TAB] to
select a field.
System Time
System Date
[19:34:30]
[Tue 01/01/2002]
Primary IDE Master
Primary IDE Slave
SATA1
:[Not Detected]
:[Not Detected]
:[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
Change Field
+-
System Information
Tab
F1
Select Field
General Help
Save and Exit
Exit
F10
ESC
v02.61 (C)Copyright 1985-2009, 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.
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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.
2.2.7
Pop-up window
BIOS SETUP UTILITY
Select a menu item then press <Enter>
to display a pop-up window with the
configuration options for that item.
Advanced
CPU Configuration
This option should
remain disabled for
the normal operation.
The driver developer
may enable it for
testing purpose.
Module Version: 13.55
AGESA Version: 3.5.2.0
AMD Phenom(tm) II X4 945 Processor
Revision: C2
Cache L1: 512KB
Cache L2: 2048KB
Cache L3: 6MB
Options
Speed
: 3000MHz, NB Cl Disabled
Able to Change Freq.: Yes Enabled
uCode Patch Level: 0x1
2.2.8
Scroll bar
GART Error Reporting
Microcode Updation
[Disabled]
[Enabled]
Select Screen
Select Item
Secure Virtual Machine Mode [Disabled]
Cool ‘n‘ Quiet
[Enalbed]
[Disabled]
[Disabled]
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.
F1
General Help
C1E Configuration
F10 Save and Exit
ESC Exit
Advanced Clock Calibration
v02.61 (C)Copyright 1985-2009, American Megatrends, 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.
BIOS SETUP UTILITY
Main
Advanced
Power
Boot
Tools
Exit
Main Settings
Use [ENTER], [TAB]
or [SHIFT-TAB] to
select a field.
System Time
System Date
[19:34:30]
[Tue 01/01/2002]
Primary IDE Master
Primary IDE Slave
SATA1
:[Not Detected]
:[Not Detected]
:[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
Change Field
+-
System Information
Tab
F1
Select Field
General Help
Save and Exit
Exit
F10
ESC
v02.61 (C)Copyright 1985-2009, 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
Primary IDE Master/Slave, SATA 1~6
While entering Setup, the BIOS automatically detects the presence of IDE/SATA devices.
There is a separate submenu for each IDE/SATA device. Select a device item then press
<Enter> to display the IDE/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 IDE/SATA device is
installed in the system.
Type [Auto]
Selects the type of IDE/SATA drive. Setting this item to [Auto] allows automatic selection of
the appropriate IDE/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 Primary IDE Master/Slave and SATA5/6 menus.
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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 OnChip SATA Channel. Configuration options: [Disabled] [Enabled]
The following two items only appear when you set OnChip SATA Channel to [Enabled].
SATA Port1 – Port4 [IDE]
Configures SATA 1/2/3/4. Configuration options: [IDE] [RAID] [AHCI]
SATA Port5 – Port6 [IDE]
Configures SATA 5/6. Configuration options: [IDE] [RAID] [AHCI]
•
•
When SATA 1/2/3/4 are configured as [IDE], SATA 5/6 can only be configured as [IDE].
When SATA 1/2/3/4/5/6 are configured as [AHCI], only SATA 1/2/3/4 can be detected
under OS. Ensure to install the AHCI driver, so that you can use SATA 1/2/3/4/5/6 in
AHCI mode under OS.
•
When SATA 1/2/3/4 are configured as [AHCI] and SATA 5/6 are configured as [IDE], you
can access the devices on SATA 5/6 before entering OS.
2-8
Chapter 2: BIOS information
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.
BIOS SETUP UTILITY
Main
Advanced
Power
Boot
Tools
Exit
Advanced Settings
Adjust System
Frequency/Voltage
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 1985-2009, American Megatrends, Inc.
2.4.1
JumperFree Configuration
The items and configuration options in this menu may vary depending on the AMD CPU
type.
CPU Level Up [Auto]
Selects the desired CPU level, and other relevant parameters will be adjusted automatically
based on the selected CPU level. Configuration options: [Auto] [Phenom II-955] [Phenom
II-3.4G] [Phenom II-3.6G]
ASUS M4A77T
2-9
Ai Overclock Tuner [Auto]
Selects the CPU overclocking options to achieve desired CPU internal frequency.
Configuration options: [Manual] [Auto] [Overclock Profile] [Test Mode] [CPU Level Up]
The following items only appear when you set Ai Overclock Tuner to [Manual].
OC From CPU Level Up [200]
Selects the desired CPU level, and other relevant parameters will be adjusted
automatically based on the selected CPU level. Configuration options: [Auto] [Phenom
II-955] [Phenom II-3.4G] [Phenom II-3.6G]
CPU Bus Frequency [200]
Sets the CPU frequency. Configuration options: [Min.=200] [Max.=550]
PCIE Frequency
Sets the PCIe frequency. Configuration options: [Min.=100] [Max.=150]
The following item only appears when you set Ai Overclock Tuner to [Overclock Profile].
Overclock Options [Auto]
Selects the overclocking profile. Configuration options: [Auto] [Overclock 2%]
[Overclock 5%] [Overclock 8%] [Overclock 10%]
CPU Ratio [Auto]
Sets the ratio between the CPU Core Clock and the CPU Bus Frequency. Use the <+> / <->
keys to adjust the ratio. The valid value ranges vary depending on your CPU model.
CPU/NB Frequency [Auto]
Sets the ratio between NorthBridge (in CPU) Clock and the CPU Bus Frequency.
Configuration options: [Auto] [800MHz] [1000MHz] [1200MHz] [1400MHz] [1600MHz]
[1800MHz] [2000MHz]
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]
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 LoadLine. The values range from 0% to 100% with a 3.225% increment. Use the <+> /
<-> keys to adjust the value. Configuration options: [Auto] [Max. = 100%] [Min. = 0%]
HT Link Speed [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] [4 Bit] [8 Bit] [16 Bit]
2-10
Chapter 2: BIOS information
HT Over Voltage [Auto]
Sets the HT over voltage. The values range from 1.20000V to 1.38000V with a 0.01000V
increment. Use the <+> / <-> keys to adjust the value. Configuration options: [Auto] [Max. =
1.38000V] [Min. = 1.20000V]
DRAM Frequency [Auto]
Selects the DRAM frequency programming method. If this item is set to [Auto], the DRAM
speed depends on the SPDs. Configuration options: [Auto] [800MHz] [1067MHz] [1333MHz]
[1600MHz]
Memory Over Voltage [Auto]
Sets the memory over voltage. The values range from 1.2000V to 2.4450V with a
0.0750V(1.2V~1.5V) or 0.0150V(1.5V~2.445V) increment. Use the <+> / <-> keys to adjust
the value. Configuration options: [Auto] [Max. = 2.4450V] [Min. = 1.2000V]
DRAM Timing/Driving Configuration
The configuration options for some of the following items vary depending on the DIMMs you
install on the motherboard.
DRAM Command Rate [Auto]
Configuration options: [Auto] [1T] [2T]
TCL [Auto]
Configuration options: [Auto] [4 CLK] ~ [12 CLK]
TRCD [Auto]
Configuration options: [Auto] [5 CLK] ~ [12 CLK]
TRP [Auto]
Configuration options: [Auto] [5 CLK] ~ [12 CLK]
TRAS [Auto]
Configuration options: [Auto] [15 CLK] ~ [30 CLK]
TRTP [Auto]
Configuration options: [Auto] [4 CLK] ~ [7 CLK]
TRC [Auto]
Configuration options: [Auto] [11 CLK] ~ [41 CLK]
TWR [Auto]
Configuration options: [Auto] [5 CLK] [6 CLK] [7 CLK] [8 CLK] [10 CLK] [12 CLK]
TRRD [Auto]
Configuration options: [Auto] [4 CLK] ~ [7 CLK]
TRWTTO [Auto]
Configuration options: [Auto] [3 CLK] ~ [17 CLK]
TWRRD [Auto]
Configuration options: [Auto] [2 CLK] ~ [10 CLK]
ASUS M4A77T
2-11
TWTR [Auto]
Configuration options: [Auto] [4 CLK] ~ [7 CLK]
TWRWR [Auto]
Configuration options: [Auto] [3 CLK] ~ [10 CLK]
TRDRD [Auto]
Configuration options: [Auto] [3 CLK] ~ [10 CLK]
TRFC0/1 [Auto]
Configuration options: [Auto] [90ns] [110ns] [160ns] [300ns] [350ns]
TREF [Auto]
Configuration options: [Auto] [Every 7.8ms] [Every 3.9ms]
DCT0:CKE drive strength [Auto] / DCT1:CKE drive strength [Auto]
Configuration options: [Auto] [1x] [1.25x] [1.5x] [2x]
DCT0:CS/ODT drive strength [Auto] / DCT1:CS/ODT drive strength [Auto]
Configuration options: [Auto] [1x] [1.25x] [1.5x] [2x]
DCT0:ADDR/CMD drive strength [Auto] / DCT1:ADDR/CMD drive strength [Auto]
Configuration options: [Auto] [1x] [1.25x] [1.5x] [2x]
DCT0:MEMCLK drive strength [Auto] / DCT1:MEMCLK drive strength [Auto]
Configuration options: [Auto] [0.75x] [1x] [1.25x] [1.5x]
DCT0:Data drive strength [Auto] / DCT1:Data drive strength [Auto]
Configuration options: [Auto] [0.75x] [1x] [1.25x] [1.5x]
DCT0:DQS drive strength [Auto] / DCT1:DQS drive strength [Auto]
Configuration options: [Auto] [0.75x] [1x] [1.25x] [1.5x]
DCT0:Processor ODT [Auto] / DCT1:Processor on-die terminat [Auto]
Configuration options: [Auto] [240 ohms +/- 20%] [120 ohms +/- 20%]
[60 ohms +/- 20%]
Chipset Over Voltage [Auto]
Sets the chipset over voltage. The values range from 1.10000V to 1.60000V with a 0.01000V
increment. Use the <+> / <-> keys to adjust the value. Configuration options: [Auto]
[Max. = 1.60000V] [Min. = 1.10000V]
2.4.2
CPU Configuration
The items in this menu show the CPU-related information that the BIOS automatically
detects.
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]
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Chapter 2: BIOS information
Cool ‘n’ Quiet [Enabled]
Enables or disables the AMD Cool ‘n’ Quiet technology. Configuration options: [Enabled]
[Disabled]
ACPI SRAT Table [Enabled]
Enables or disables the building of ACPI SRAT table. Configuration options: [Enabled]
[Disabled]
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]
C1E Configuration [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]
2.4.3
Chipset
NorthBridge Configuration
DRAM Controller 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]]
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).
Configuration options: [Auto] [Always]
Power Down Enable [Disabled]
Allows you to enable or disable DDR power down mode.
Configuration options: [Disabled] [Enabled]
ASUS M4A77T
2-13
ECC Configuration
ECC Mode [Disabled]
Enables or disables the DRAM ECC that allows the hardware to report and correct
memory errors automatically. Configuration options: [Disabled] [Basic] [Good] [Super]
[Max] [User]
Primary Display Adapter [GFX-GPP-PCI]
Allows you to set the primary display adapter. Configuration options: [GFX-GPP-PCI] [GPP-
GFX-PCI] [PCI-GFX-GPP]
GFX: primary display adapter on the PCIe x16_1 slot
GPP: primary display adapter on the PCIe x16_2 or PCIe x1 slot
PCI: primary display adapter on the PCI slot
2.4.4
Onboard Devices Configuration
Serial Port1 Address [3F8/IRQ4]
Selects the Serial Port1 base address. Configuration options: [Disabled] [3F8/IRQ4]
[2F8/IRQ3] [3E8/IRQ4] [2E8/IRQ3]
Parallel Port Address [378]
Selects the Parallel Port base addresses. Configuration options: [Disabled] [378] [278] [3BC]
Parallel Port Mode [Normal]
Selects the Parallel Port mode. Configuration options: [Normal] [EPP] [ECP] [EPP + ECP]
Parallel Port IRQ [IRQ7]
Allows BIOS to select the Parallel Port IRQ. Configuration options: [IRQ5] [IRQ7]
HDAudio Controller [Enabled]
Enables or disables the high definition audio controller. Configuration options: [Disabled]
[Enabled]
Front Panel Select [HD Audio]
Selects the front panel type. Configuration options: [AC97] [HD Audio]
OnBoard LAN Controller [Enabled]
Enables or disables the onboard LAN controller. Configuration options: [Disabled] [Enabled]
OnBoard LAN Boot ROM [Disabled]
Enables or disables the Onboard LAN Boot ROM. Configuration options: [Disabled]
[Enabled]
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Chapter 2: BIOS information
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]
Enables or disables the USB functions. Configuration options: [Disabled] [Enabled]
USB 2.0 Controller [Enabled]
Enables or disables the USB 2.0 controller. Configuration options: [Disabled] [Enabled]
Legacy USB Support [Auto]
Enables or disables support for Legacy USB storage devices including USB flash drives and
USB hard drives. Setting this item 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]
Configures the USB 2.0 controller in HiSpeed (480Mbps) mode or FullSpeed (12Mbps)
mode. 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]
[Forced FDD] [Hard Disk] [CDROM]
ASUS M4A77T
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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.
BIOS SETUP UTILITY
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
Select Screen
Select Item
+-
F1
Change Option
General Help
F10 Save and Exit
ESC Exit
v02.61 (C)Copyright 1985-2009, American Megatrends, Inc.
2.5.1
Suspend Mode [Auto]
Selecta 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]
Enables or disables the Advanced Configuration and Power Interface (ACPI) 2.0 support.
Configuration options: [Disabled] [Enabled]
2.5.3
ACPI APIC Support [Enabled]
Enables or disables the Advanced Configuration and Power Interface (ACPI) support in the
Advanced Programmable Interrupt Controller (APIC). When this item is 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 [Always Off]
When this item set to [Always Off], the system goes into off state after an AC power loss.
When this item set to [Always 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]
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Chapter 2: BIOS information
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 / 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 want the detected temperatures to be displayed.
CPU / Chassis Fan Speed [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 [Ignored] if you do not wish to display the detected speed.
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. Select [Ignored] if you do not want the detected voltage to be displayed.
Smart Q-Fan Function [Enabled]
Allows you to enable or disable the ASUS Q-Fan feature that smartly adjusts the CPU fan
speed for more efficient system operation. Configuration options: [Disabled] [Enabled]
Fan Auto Mode Start Voltage [5.0V]
Allows you to select the fan auto mode start voltage. Configuration options: [4.0V] [4.5V]
[5.0V] [5.5V] [6.0V]
Fan Auto Mode Start Speed Temp [25ºC]
Allows you to set the smart Q-Fan start working temperature. Configuration options: [25ºC] ~
[48ºC]
Fan Auto Mode Full Speed Temp [55ºC]
Allows you to set the smart Q-Fan full speed temperature. Configuration options: [51ºC] ~
[75ºC]
ASUS M4A77T
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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 sub-menu.
BIOS SETUP UTILITY
Main
Advanced
Power
Boot
Tools
Exit
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 1985-2009, American Megatrends, Inc.
2.6.1
Boot Device Priority
1st ~ xxth Boot Device [xxx Drive]
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.
AddOn ROM Display Mode [Force BIOS]
Sets the display mode for option ROM. Configuration options: [Force BIOS] [Keep Current]
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Chapter 2: BIOS information
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.
2.
Select the Change Supervisor Password item and press <Enter>.
In 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.
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.
ASUS M4A77T
2-19
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.
2.
Select the Change User Password item and press <Enter>.
In 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 this item is set to [Setup], BIOS checks for user password when accessing the
Setup utility. When this item is set to [Always], BIOS checks for user password both when
accessing Setup and booting the system. Configuration options: [Setup] [Always]
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 submenu.
BIOS SETUP UTILITY
Main
Advanced
Power
Boot
Tools
Exit
Tools Settings
ASUS EZ Flash 2
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)
Express Gate
[Auto]
[10 Seconds]
[No]
Enter OS Timer
Reset User Data
Select Screen
Select Item
AI NET2
Enter Go to Sub Screen
F1
General Help
F10 Save and Exit
ESC Exit
v02.61 (C)Copyright 1985-2009, 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.
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Chapter 2: BIOS information
2.7.2
Express Gate [Auto]
Enables or disables the ASUS Express Gate feature. ASUS Express Gate is a unique
instant-on environment that provides quick access to the Internet and Skype.
Configuration options: [Disabled] [Enabled] [Auto]
Enter OS Timer [10 Seconds]
Sets countdown duration that the system waits at the Express Gate’s first screen
before starting Windows or other installed OS. Choose [Prompt User] to stay at the first
screen of Express Gate for user action. Configuration options: [Prompt User]
[1 second] [3 seconds] [5 seconds] [10 seconds] [15 seconds] [20 seconds]
[30 seconds]
Reset User Data [No]
Allows you to clear Express Gate’s user data. Configuration options: [No] [Reset]
When setting this item to [Reset], ensure to save the setting to the BIOS so that the
user data will be cleared the next time you enter the Express Gate. User data includes
the Express Gate’s settings as well as any personal information stored by the web
browser (bookmarks, cookies, browsing history, etc.). This is useful in the rare case
where corrupt settings prevent the Express Gate environment from launching properly.
The first time wizard will run again when you enter the Express Gate environment after
clearing its settings.
2.7.3
AI NET 2
Check Realtek LAN cable [Disabled]
Enables or disables checking of the Realtek LAN cable during the Power-On Self-Test
(POST). Configuration options: [Disabled] [Enabled]
ASUS M4A77T
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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.
BIOS SETUP UTILITY
Main
Advanced
Power
Boot
Tools
Exit
Exit Options
Exit system setup
after saving the
Exit & Save Changes
Exit & Discard Changes
Discard Changes
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.
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Chapter 2: BIOS information
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