User’s Manual
EPIA-MII
Mini-ITX Mainboard
Version 1.50
August 26, 2004
FCC-B Radio Frequency Interference Statement
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 when
the equipment is operated in a commercial environment. This equipment
generates, uses and can radiate radio frequency energy and, if not installed
and used in accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in a
residential area is likely to cause harmful interference, in which case the user
will be required to correct the interference at his own expense.
Notice 1
The changes or modifications not expressly approved by the party
responsible for compliance could void the user’s authority to operate the
equipment.
Notice 2
Shielded interface cables and A.C. power cord, if any, must be used in order
to comply with the emission limits.
iii
Safety Instructions
1. Always read the safety instructions carefully.
2. Keep this User’s Manual for future reference.
3. Keep this equipment away from humidity.
4. Lay this equipment on a reliable flat surface before setting it up.
5. The openings on the enclosure are for air convection hence protects the
equipment from overheating. DO NOT COVER THE OPENINGS.
6. Make sure the voltage of the power source and adjust properly 110/220V
before connecting the equipment to the power inlet.
7. Place the power cord in such a way that people cannot step on it. Do not
place anything over the power cord.
8. Always unplug the power cord before inserting any add-on card or
module.
9. All cautions and warnings on the equipment should be noted.
10. Never pour any liquid into the opening. Liquid can cause damage or
electrical shock.
11. If any of the following situations arises, get the equipment checked by a
service personnel:
• The power cord or plug is damaged
• Liquid has penetrated into the equipment
• The equipment has been exposed to moisture
• The equipment has not work well or you can not get it work according
to User’s Manual.
• The equipment has dropped and damaged
• If the equipment has obvious sign of breakage
12. DO NOT LEAVE THIS EQUIPMENT IN AN ENVIRONMENT
0
UNCONDITIONED, STORAGE TEMPERATURE ABOVE 60 C
0
(140 F), IT MAY DAMAGE THE EQUIPMENT.
CAUTION: Explosion or serious damage may occur if the battery is
incorrectly replaced. Replace only with the same or equivalent type
recommended by the manufacturer.
iv
Box Contents
• 1 x VIA Mainboard
• 1 x Quick Installation Guide
• 1 x Floppy Ribbon Cable
• 1 x ATA-66/100/133 IDE Ribbon Cable
• 1 x I/O Bracket
• 1 x Driver Utilities CD
v
vi
Table of Contents
Chapter 1: Specifications ........................................1-1
Mainboard Specifications..........................................................1-2
Mainboard Layout .....................................................................1-4
Back Panel Ports ......................................................................1-6
Slots..........................................................................................1-6
Onboard Connectors and Jumpers...........................................1-7
Chapter 2: Installation..............................................2-1
CPU Installation ........................................................................2-2
Memory Module Installation......................................................2-4
Connecting the Power Supply...................................................2-6
Back Panel Ports ......................................................................2-7
Connectors..............................................................................2-11
Jumpers ..................................................................................2-19
Slots........................................................................................2-20
Chapter 3: BIOS Setup.............................................3-1
Entering Setup ..........................................................................3-2
Control Keys .............................................................................3-2
Getting Help..............................................................................3-3
The Main Menu.........................................................................3-4
Standard CMOS Features ........................................................3-6
Advanced BIOS Features .........................................................3-8
Advanced Chipset Features....................................................3-12
Integrated Peripherals.............................................................3-14
Power Management Setup .....................................................3-18
PnP / PCI Configurations........................................................3-24
PC Health Status ....................................................................3-27
Frequency / Voltage Control ...................................................3-28
Load Fail-Safe Defaults ..........................................................3-30
Load Optimized Defaults.........................................................3-31
Set Supervisor / User Password.............................................3-32
Save & Exit Setup...................................................................3-34
Exit Without Saving.................................................................3-35
Chapter 4: Driver Installation ..................................4-1
Driver Utilities............................................................................4-2
CD Content ...............................................................................4-3
vi
Chapter
Specifications
The ultra-compact and highly intergrated VIA
EPIA-MII Mini-ITX Mainboard is the smallest
form factor mainboard specification available
today, developed by VIA Technologies, Inc. as part
of the company’s open industry-wide total
connectivity initiative. The mainboard enables the
creation of an exciting new generation of small,
ergonomic, innovative and affordable embedded
systems. Through high level of integration, mini-
ITX only occupy 66% of the size of FlexATX
mainboard form factor. The mainboard comes with
an embedded VIA Processor, boasting ultra low
power consumption and cool, quiet operation.
This chapter includes the following sections:
Mainboard Specifications
Mainboard Layout
Back Panel Ports
Slots
1-2
1-4
1-6
1-6
1-7
Connectors / Jumpers
1-1
Chapter 1
Mainboard Specifications
CPU
• VIA C3 / EDEN EBGA Processor (onboard)
• Enhanced Ball Grid Array Package (EBGA)
• Internal L1 128KB and L2 64KB cache memory
Chipset
• VIA CLE266 North Bridge
• VT8235 South Bridge
Memory
• 1 x DDR266 DIMM socket (up to 1 GB)
Expansion Slots
• 1 x PCI
Graphics
• Integrated VIA Castlerock AGP graphics
Audio
• VT1616, six-channel AC’97 Codec
Onboard IEEE 1394 (optional)
• VIA VT6307S IEEE 1394
LAN
• VIA VT6103 10/100 Base-T Ethernet PHY
IDE
• 2 X UltraDMA 66/100/133 Connectors
OnModule CardBus/CF
• RICOH 476II
LVDS (optional)
VIA VT1631 LVDS Transmitter
1-2
Specifications
Back Panel I/O Ports
• 1 x PS2 mouse port
• 1 x PS2 keyboard port
• 1 x VGA port
• 1 x S-Video port
• 1 x RCA port (SPDIF or TV-out)
• 1 x RJ-45 LAN port
• 2 x USB 2.0/1.1 ports
• 1 x 1394 port
• 1 x Cardbus slot & CF slot
• 1 x Serial port
• 3 x Audio jacks: line-out, line-in and mic-in
Onboard I/O Connectors
• 1 x USB 2.0/1.1 connector (USB 2.0 support included in South Bridge)
• 1 x 1394 connector (optional)
• 1 x CD Audio-in connector
• 1 x Front audio connector
• 1 x FIR connector
• 1 x KBMS connector
• 1 x Wake-on-LAN connector
• 3 x Fan connectors (CPU Fan, System Fan, Fan 3)
• 1 x LVDS connector (optional)
• 1 x Serial port connector for second COM port
• 1 x LPT port connector
• 1 x SMBus connector
• 1 x Video feature connector support (optional)
BIOS
• Award BIOS on 2/4Mbit flash memory
Form Factor
• 17 cm X 17 cm Mini-ITX (6 layers)
1-3
Chapter 1
Mainboard Layout
ATXPWR
CPU
CPUFAN
DIMM
Top: Mouse
Bottom: Keyboard
SYSFAN
COM2
Top: COM1
Bottom: VGA
SMBUS
Top: RJ45
Bottom: USB
FIR
SPDIF_SEL
LPT
CLE266
S-Video
LVDS
IDE1
IDE2
RCA / SPDIF
Line-out
Line-in
CMOS
Battery
USB 3/4
KBMS
CLEAR_CMOS
Microphone
1394
Cardbus & CF
FDD
BIOS
Socket
F_AUDIO
CD_IN
1394_2
WOL FAN3
PCI
F_PANEL
Back Panel
PS2_MS
COM1
RJ45
Cardbus
CF
PS2_KB
VGA Out
USB
S-Video RCA / SPDIF Line-Out Line-In Microphone 1394
1-4
Specifications
Add-On Module
CF
Cardbus
Placement of Add-On Module
CLE266
1-5
Chapter 1
Back Panel Ports
Port
Description
Page
2-9
2-9
2-9
2-9
2-9
2-7
2-7
2-8
2-8
2-8
2-8
2-8
1394
IEEE1394 (Firewire) port
Line-Out, Line-In, Microphone
PCMCIA Type II card slot
CF Slot
Audio Jacks
Cardbus Slot
CF Slot
COM 1
Serial port
PS2-MS
PS2-KB
RCA_JACK
RJ45
PS2 mouse port
PS2 keyboard port
RCA Video or SPDIF jack
10/100 NIC port
S-VIDEO
USB 1-2
VGA Out
S-Video Port
Universal Serial Bus ports 1 - 2
VGA out port
Slots
Slot
Description
Page
2-4
DIMM 1
PCI
Memory module slot
Expansion card slot
2-19
1-6
Specifications
Onboard Connectors and Jumpers
Connecter/Jumper Description
Page
2-16
2-6
1394_2
ATXPWR
CD_IN
IEEE 1394 connector
ATX power cable connector
Onboard CD audio cable connector
2-15
CLEAR_CMOS
COM2
Jumper to reset CMOS settings to default 2-18
Second serial port connector
Front audio connector
2-14
2-15
2-11
2-2
F_AUDIO
F_PANEL
Fans
Case connector
CPU Fan, System Fan, Fan 3
Floppy disk drive connector
Infrared Radiation connector
SM Bus connector
FDD
2-14
2-12
2-16
2-10
2-12
2-16
2-17
2-18
2-13
2-13
FIR
SMBUS
IDE 1 & 2
KBMS
IDE hard disk drive connectors
CIR/PS2(EXT_KBMS) connector
LPT port connector
LPT
LVDS
LVDS connector
SPDIF_SEL
USB 3/4
WOL
Sony Philips Digital Interface jumper
Universal Serial Bus connector
Wake On LAN connector
1-7
Chapter 1
1-8
Chapter
Installation
This chapter provides you with information about
hardware setup procedures. While installing the
mainboard, carefully hold the components and
closely follow the installation procedures. Some
components may be damaged if they are installed
incorrectly.
It is recommended to use a grounded wrist strap
before handling computer components. Static
electricity can damage some components.
This chapter includes the following sections:
CPU
2-2
Memory Module Installation
Connecting the Power Supply
Back Panel Ports
Connectors
2-4
2-6
2-7
2-11
2-19
2-20
Jumpers
Slots
2-1
Chapter 2
CPU
The VIA EPIA-MII Mini-ITX Mainboard includes an embedded VIA Eden
Processor or VIA C3TM E-Series Processor. The CPUFAN (CPU fan) and
SYSFAN (system fan) run on +12V and maintain system cooling. When
connecting the wire to the connectors, always be aware that the red wire is
the Positive and should be connected to the +12V. The black wire is Ground
and should be connected to GND. Both CPU and System fan connectors
have sensors to detect fan speed.
Sensor
+12V
GND
SYSFAN
CPUFAN
CLE266
PWRFAN
TM
The VIA C3 E-Series Processor
With low power consumption and advanced
thermal dissipation properties, the embedded
VIA C3TM E-Series requires only a small fan to
guarantee performance and reliability. Ensure
that the CPU Fan Connector is correctly
installed as shown.
2-2
Installation
The VIA Eden Processor
Providing ultra-low power consumption
and advanced thermal dissipation
properties, the VIA Eden Processor
features a fanless design. The VIA Eden
Processor requires only a heatsink as
shown.
Warning: This motherboard is not designed to support overclocking. Any attempt to
operate beyond product specifications is not recommended. We do not guarantee
the damages or risks caused by operation beyond product specifications.
2-3
Chapter 2
Memory Module Installation
The VIA EPIA-MII Mini-ITX Mainboard provides one DIMM slot for
DDR266 SDRAM memory modules.
CLE266
DDR SDRAM Module Installation Procedures
1. Push the white retaining latches at either end of the DIMM slot outwards.
2. Align the DDR SDRAM module with the corresponding notches on the
DIMM slot. The modules will only fit if placed in the correct position.
3. With both hands, press the DDR SDRAM module down into the DIMM
slot so that the white retaining latches rotate up and secure the module in
place (see picture below).
2-4
Installation
Available DDR SDRAM Configurations
Refer to the table below for available DDR SDRAM configurations on the
mainboard.
Slot
Memory Module
Total Memory
64 MB - 1 GB
DIMM
(Bank 0 & 1)
64MB, 128MB, 256MB, 512MB,
1GB
Maximum System Memory Supported
64 MB - 1 GB
2-5
Chapter 2
Connecting the Power Supply
The VIA EPIA-MII Mini-ITX Mainboard requires an ATX power supply to
be connected. Before inserting the power supply connector, always make
sure that all components are installed correctly to ensure that no damage will
be caused.
ATX 20-Pin Power Connector
To connect the ATX power supply, make sure the plugs of the power supply
are inserted in the proper orientation and the pins are correctly aligned.
Then, push down the power supply plug firmly into the connector.
Pin
1
Signal
3.3V
3.3V
GND
5V
1
10
20
2
3
11
4
5
GND
5V
6
7
GND
PW_OK
5V_SB
12V
8
9
CLE266
10
11
12
13
14
15
16
17
18
19
20
3.3V
-12V
GND
PS_ON
GND
GND
GND
NC
5V
5V
2-6
Installation
Back Panel Ports
The back panel has the following ports:
PS2_MS
COM1
RJ45
Cardbus
CF
PS2_KB
VGA Out
USB
S-Video
RCA / SPDIF
Line-Out Line-In Microphone 1394
Mouse Port: PS2_MS
The mainboard provides a standard PS/2 mouse connector for attaching a
PS/2 mouse. You can plug a PS/2 mouse directly into this connector. The
connector location and pin assignments are as follows.
Pin Signal
Description
Mouse data
No connection
Ground
1
2
3
4
5
6
Mouse DATA
6
5
NC
4
3
GND
2
1
VCC
+5V
PS2 Mouse (6-pin female)
Mouse Clock
NC
Mouse clock
No connection
Keyboard Port: PS2_KB
The mainboard provides a standard PS/2 keyboard connector for attaching a
PS/2 keyboard. You can plug a PS/2 keyboard directly into this connector.
Pin Signal
Description
1
2
3
4
5
6
Keyboard DATA Keyboard data
6
5
NC
No connection
Ground
4
3
GND
VCC
2
1
+5V
PS2 Keyboard (6-pin female)
Keyboard Clock Keyboard clock
NC No connection
2-7
Chapter 2
VGA Out
A DB-15 pin female connector that connects to a
VGA monitor.
USB Ports
The mainboard provides 2 USB 2.0/1.1 ports (plus 1 pin-header for up to 2
additional USB 2.0/1.1 ports). USB-compatible devices can be plugged
directly into these ports.
Pin Signal
Description
1
2
3
4
1
2
3
4
VCC
+5V
-DATA
Negative Data Channel
+DATA Positive Data Channel
GND Ground
RJ45 10/100 NIC Port
The mainboard provides one standard RJ-
45 port for connection to the Local Area
Network (LAN). You can connect a
network cable to the LAN port.
S-Video Port
This port allows S-Video output in NTSC
and PAL modes.
RCA Video or S/PDIF Port
This dual function port may be used either
as a RCA Video port or as a S/PDIF port.
See SPDIF_SEL in the Jumpers section for
more details.
2-8
Installation
IEEE 1394 Port
The mainboard provides one standard 1394 port. You can
connect any 1394 (Firewire) device to this port.
Serial Port: COM1
The mainboard offers one 9-pin male Serial Port connector COM1. You can
attach a serial mouse or other serial devices directly to these port.
Pin Signal
Description
1
2
3
4
5
6
7
8
9
DCD
SIN
Data Carry Detect
Serial In or Receive Data
Serial Out or Transmit Data
Data Terminal Ready
Ground
1
5
SOUT
DTR
GND
DSR
RTS
CTS
RI
6
9
Data Set Ready
Request To Send
Clear To Send
9-Pin Serial Port
Ring Indicate
Card Slots: PCMCIA, CF
The mainboard comes with an add-on card that provides support for
PCMCIA and CF cards. The CF slot supports both type I and type II. These
slots are accessed on the same side as the ports.
2-9
Chapter 2
Audio Jacks: Line-In, Line-Out, Microphone
Jack
2-Channel
6-Channel
Line-In
Line-Out
Mic
Line in
Rear (Left / Right)
Front (Left / Right)
Center / Subwoofer
Line out
Microphone
Line-Out Line-In Microphone
The Line-Out jack is for connecting to external speakers or headphones.
The Line-In jack is for connecting to an external audio device such as a CD
player, tape player, etc....
The Mic jack is for connecting to a microphone.
Note: The Audio ports can be switched to Smart 5.1 6-channel audio output. You
can enable the function by clicking the “Vinyl Audio” icon on your desktop after
installing the audio driver.
After completing the previous settings, you need to connect your speakers to
the audio jacks as shown below.
PS2_MS
COM1
RJ45
Cardbus
CF
PS2_KB
VGA Out
USB
S-Video RCA / SPDIF Line-Out Line-In Microphone 1394
2-10
Installation
Connectors
Hard Disk Connectors: IDE1 & IDE2
The mainboard has a 32-bit Enhanced PCI IDE and Ultra DMA 66/100
controller that provides PIO mode 0~4, Bus Master, and Ultra DMA 66/100
functions. You can connect up to four hard disk drive, CD-ROM, LS-120
and other devices. These connectors utilize the provided IDE hard disk
cable.
IDE 1
CLE266
IDE 2
IDE1 (Primary IDE Connector)
The first hard drive should always be connected to
IDE1. IDE1 can connect a Master and a Slave drive.
You must configure the second hard drive to Slave
mode by setting the jumper accordingly.
IDE2 (Secondary IDE Connector)
IDE2 can also connect a Master and a Slave drive.
If you install two hard disks on a single cable, you must set the jumper on the
second hard disk drive to slave mode. Please refer to the hard disk
documentation supplied by hard disk vendor for the jumper settings.
2-11
Chapter 2
Case Connector: F_PANEL
The F_PANEL connector block allows you to connect to the power switch,
reset switch, power LED, HDD LED, SLED and the Speaker on the case.
2
1
16
15
Pin Signal
Pin Signal
1
PWR LED+
2
4
6
8
HDD LED+
3
PWR LED+
PWR LED-
SPEAKER+
NC
HDD LED-
PW_BN+
PW_BN-
5
7
9
10 RESET+
12 RESET-
CLE266
11
NC
13 SPEAKER-
15 NC
14 SLP_LED+
16 SLP_LED-
Power Switch (PW_BN)
Connect to a 2-pin push button switch. Pressing this button will turn the
system power on or off.
Reset Switch (RESET)
The Reset Switch is used to reboot the system rather than turning the power
ON/OFF. Avoid rebooting while the HDD is working. You can connect the
Reset Switch from the system case to this pin.
Power LED (PWR LED)
The LED is lit when the system is power on. If the system is in S1 (POS -
Power On Suspend) or S3 (STR - Suspend To RAM) state, the LED will
blink.
HDD LED
HDD LED shows the activity of a hard disk drive. Avoid turning the power
off while HDD LED is lit. Connect the HDD LED from the system case to
this pin.
SLP_LED
The SLP_LED is lit when the system is in the S1 (POS - Power On Suspend)
state.
Speaker
The speaker from the system case is connected to this pin
2-12
Installation
IrDA Infrared Module Connector: FIR
This connector allows you to connect an IrDA Infrared module. You must
configure the setting through the BIOS setup to activate the IR function.
Pin
1
Signal
VCC
FIR
1
2
IRRX2
IRRX
GND
3
CLE266
5
4
5
IRTX
Consumer Infrared Module / PS2 Header: KBMS
When the header is not in use, please short pin 3&5, pin 4&6, pin 7&9, and
pin 8&10.
Pin Signal
Pin Signal
1
3
5
7
9
+5V
2
4
GND
KB_CLK
KB_DATA
EXT_KBDATA
MS_DATA
EXT_KBCLK 6
MS_CLK
CLE266
8
EXT_MSCLK 10 EXT_MSDATA
CIR / EXT. KBMS
10
2
9
1
2-13
Chapter 2
USB pin-header: USB3/4
The mainboard provides 1 USB pin-header connector, allowing up to 2
additional USB ports. Please plug the USB 2-port module onto this pin-
header.
Pin Signal
Pin Signal
1
3
5
7
9
VCC
2
4
6
8
VCC
USB2 -
USB2 +
GND
USB 3 -
USB 3 +
GND
CLE266
NC
10 GND
10
9
1
2
USB 3/4
Wake-on LAN: WOL
This connector allows you to connect a network card with the Wake-On
LAN function. The connector will power up the system when a signal is
received through the network card. Please note that the function of ACPI
WOL may be disabled when users unplug the power cord or turn off the
power button manually.
WOL
CLE266
2-14
Installation
COM2: The Second Serial Port
COM2 is a pin header for second serial port.
Pin Signal Description
9
1
1
2
3
4
5
6
7
8
9
DCD
SIN
Data Carry Detect
Serial In or Receive Data
2
SOUT Serial Out or Transmit Data
COM2
DTR
GND
DSR
RTS
CTS
RI
Data Terminal Ready
Ground
Data Set Ready
Request To Send
Clear To Send
Ring Indicate
CLE266
Floppy Disk Drive Connector: FDD
The floppy disk drive connector supports 360K, 720K, 1.2M. 1.44M, and
2.88M floppy disk types.
CLE266
2-15
Chapter 2
CD Audio Connector: CD_IN
This connector is for the CD-ROM audio connector.
CLE266
CD_IN
Front Audio Panel: F_AUDIO
This connector allows you to connect a front audio panel to the mainboard.
Only the line-out and microphone functions are available for use on the front
panel. To connect the front audio cable, first remove the two red plastic
jumpers.
Pin Signal
Pin Signal
1
3
5
7
9
FRN_MIC
2
AGND
+5V
AUD_MIC_BIAS
LINE_OUT_R
NC
4
6
NEXT_R
Blank
CLE266
8
LINE_OUT_L
10
NEXT_L
2
1
10
9
F_AUDIO
2-16
Installation
SMBus Connector: SMBus
This is for connecting a SMBus device.
Pin Signal
SMBUS
1
2
3
4
5
6
+3.3V
1
+3.3V
CLE266
EL-ON
SMBCK
SMBDT
GND
6
LPT Pin Header: LPT
The mainboard provides a pin header to attach a parallel port.
2
26
25
Pin Signal
Pin Signal
1
STROBE
2
AUTO FEED#
1
3
DATA0
DATA1
DATA2
DATA3
DATA4
DATA5
DATA6
DATA7
ACK#
4
ERR#
INIT#
SLIN#
GND
GND
GND
GND
GND
GND
GND
GND
NC
LPT
5
6
7
8
9
10
12
14
16
18
20
22
24
26
11
13
15
17
19
21
23
25
CLE266
BUSY
PE
SELECT
2-17
Chapter 2
1394 Port Connector: 1394_2
The mainboard provides a connector to
attach an additional 1394 port.
Pin Signal
Pin Signal
CLE266
1
3
5
7
9
TPA0+
GND
2
TPA0-
4
GND
TPB0+
1394_VDD
GND
6
TPB0-
8
1394_VDD
10
2
1
1394_2
LVDS Connector (Optional)
9
This connector allows you to connect to a LVDS module.
The LVDS connector may not be available on your mainboard. This is an
option that is added during the manufacturing process. If you would like a
mainboard with the LVDS connector, please contact your vendor or sales
contact for more information.
Pin Signal
Pin Signal
1
GFPDE
GFPD0
GFPD1
GFPD2
GFPHS
GFPVS
GFPD11
GFPD12
ENPVDD
ENPVEE
FPBKLP
PWRGD_SB
SPCLK2
SPD2
2
GFPD3
LVDS
3
4
GFPD4
5
6
GFPD5
7
8
GFPCLK
GFPD6
9
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
GFPD7
GFPD8
GFPD9
CLE266
GFPD10
GFPD13
GFPD14
GFPD15
GFPD16
GFPD17
GFPD18
GFPD19
GFPD20
GFPD21
GFPD22
GFPD23
GND
GND
3.3V
GND
5V
5V
2-18
Installation
Jumpers
The mainboard provides jumpers for setting the mainboard’s functions. This
section will explain how to change settings for your mainboard’s functions
through the use of the jumpers.
Clear CMOS: CLEAR_CMOS
The onboard CMOS RAM stores system configuration data and has an
onboard battery power supply. The long-life battery has a lifetime of at least
5 years. If you want to clear the system configuration data from the CMOS
RAM, use the CLEAR_CMOS (Clear CMOS jumper). You can clear the
CMOS by shorting pins 1 and 2 while the system is off. Then return it to the
2-3 pin position. Shorting the jumper while the system is on will damage the
mainboard. The default position of the jumper is on pins 2 and 3.
Setting
Keep
1
2
3
OFF ON ON
ON ON OFF
3
1
Clear
CLE266
CLEAR_CMOS
1
3
2
4
SPDIF_SEL
RCA Video or S/PDIF Select: SPDIF_SEL
Users can select either RCA Video or
S/PDIF as the enabled function on the
Setting
RCA
1
2
3
4
dual-purpose port. Please note that text
may not be clear due to the lower
resolution in TV sets. If the text is not
legible, try enlarging the text in the OS
control panels. If your TV screen
flickers, set the refresh rate to 60 Hz or
less.
ON ON OFF OFF
OFF OFF ON ON
SPDIF
2-19
Chapter 2
Slots
Peripheral Component Interconnect: PCI
The PCI slot allows you to insert PCI expansion card. When adding or
removing expansion cards, make sure that you unplug the power supply first.
Meanwhile, read the documentation for the expansion card to make any
necessary hardware or software settings for the expansion card, such as
jumpers, switches or BIOS configuration.
CLE266
PCI Interrupt Request Routing
The IRQ, abbreviation of interrupt request line and pronounced I-R-Q, are
hardware lines over which devices can send interrupt signals to the
microprocessor. The “PCI & LAN” IRQ pins are typically connected to the
PCI bus INT A# ~ INT D# pins as follows:
Order 1
INT B#
Order 2
INT C#
Order 3
INT D#
Order 4
INT A#
PCI Slot
2-20
Chapter
BIOS Setup
This chapter gives you detailed explaination of each
BIOS setup functions.
This chapter includes the following sections:
Entering Setup
3-2
Control Keys
3-2
Gettings Help
3-3
The Main Menu
3-4
Standard CMOS Features
Advanced BIOS Features
Advanced Chipset Features
Integrated Peripherals
Power Management Setup
PNP / PCI Configurations
PC Health Status
3-6
3-8
3-12
3-14
3-18
3-23
3-26
3-27
3-30
3-31
3-32
3-34
3-35
Frequency / Voltage Control
Load Fail-Safe Defaults
Load Optimized Defaults
Set Supervisor / User Password
Save & Exit Setup
Exit Without Saving
3-1
Chapter 3
Entering Setup
Power on the computer and press Deletestraight away to enter the BIOS
setup menu. If you missed the BIOS setup entry point, you may restart the
system and try again.
Control Keys
Keys
Description
Up Arrow
Down Arrow
Left Arrow
Right Arrow
Enter
Move to the previous item
Move to the next item
Move to the item in the left side
Move to the item in the right side
Select the item
Escape
Jumps to the Exit menu or returns to the main menu
from a submenu
Page Up / +
Increase the numeric value or make changes
Page Down / - Decrease the numeric value or make changes
F1
F5
F6
General help, only for Status Page Setup Menu and
Option Page Setup Menu
Restore the previous CMOS value from CMOS, only
for Option Page Setup Menu
Load the default CMOS value from Fail-Safe default
table, only for Option Page Setup Menu
F7
Load Optimized defaults
F9
Jumps to the Main Menu
F10
Save all the CMOS changes and exit
3-2
BIOS Setup
Getting Help
Main Menu
The main menu displays all BIOS setup categories. Use the control keys
Up/Down Arrow Keysto select any item/sub-menu. Description of the
selected/highlighted category is displayed at the bottom of the screen.
Sub-Menu
If you find a right pointer symbol (as shown in
IDE Primary Master
IDE Primary Slave
IDE Secondary Master
IDE Secondary Slave
the right view) appears on the left of certain
fields, this means a sub-menu is available. The
sub-menu contains additional options. You
can use control keys Up/Down Arrow
Keysto highlight the field and press Enter
to enter the sub-menu. To return from the sub-menu press Esc.
General Help: F1
The BIOS setup program provides a General Help screen. You can call up
this screen from any menu/sub-menu by pressing F1. The help screen
displays the keys for use and navigate the BIOS setup. Press Escto exit the
help screen.
3-3
Chapter 3
The Main Menu
The Main Menu contains twelve setup functions and two exit choices. Use
arrow keys to select the items and press Enterto accept or enter the sub-
menu.
Standard CMOS Features
Use this menu to set basic system configurations.
Advanced BIOS Features
Use this menu to set the advanced features available on your system.
Advanced Chipset Features
Use this menu to set chipset specific features and optimize system
performance.
Integrated Peripherals
Use this menu to set onboard peripherals features.
Power Management Setup
Use this menu to set onboard power management functions.
PnP/PCI Configurations
Use this menu to set the PnP and PCI configurations.
PC Health Status
This menu shows the PC health status.
3-4
BIOS Setup
Frequency/Voltage Control
Use this menu to set the system frequency and voltage control.
Load Fail-Safe Defaults
Use this menu option to load the BIOS default settings for minimal and
stable system operations.
Load Optimized Defaults
Use this menu option to load BIOS default settings for optimal and high
performance system operations.
Set Supervisor Password
Use this menu option to set the BIOS supervisor password.
Set User Password
Use this menu option to set the BIOS user password.
Save & Exit Setup
Save BIOS setting changes and exit setup.
Exit Without Saving
Abandon all BIOS setting changes and exit setup.
3-5
Chapter 3
Standard CMOS Features
Date
The date format is <Day><Month><Date><Year>.
Day - day of the week, for example Friday. Read-only.
Month - the month from Jan to Dec.
Date - the date from 1 to 31.
Year - the year, range from 1999 to 2098.
Time
The time format is <Hour><Minute><Second>.
Drive A/B
Set the type of floppy drive installed. Settings: None, 360K (5.25 in.), 1.2M
(5.25 in.), 720K (3.5 in.), 1.44M (3.5 in.), 2.88M (3.5 in.)
Halt On
Determine the system behaviour if an error is detected at boot. Settings are:
All Errors
System halts when any error is detected.
No Errors
System does not halt for any error.
All, But Keyboard
All, But Diskette
All, But Disk/Key
System halts for all non-key errors.
System halts for all non-disk errors.
System halts for all non-key and non-disk errors.
3-6
BIOS Setup
IDE Primary Master/Slave, Secondary Master/Slave
Press Enterto enter the sub-menu and the following screen appears:
The specifications of your drive must match with the drive table. The hard
disk will not work properly if you enter improper information for this
category. Select Auto whenever possible. If you select Manual, make sure the
information provided is from your hard disk vendor or system manufacturer.
IDE <Primary
Master>
The name of this menu item will match the
name of the menu. The settings are None,
Auto, Manual.
Access Mode
Capacity
The settings are CHS, LBA, Large, Auto.
The formatted size of the storage device.
Number of cylinders.
Cylinder
Head
Number of heads.
Precomp
Write precompensation.
Landing Zone
Sector
Cylinder location of the landing zone.
Number of sectors.
PIO Mode
Ultra DMA Mode
The settings are Mode 0/1/2/3/4, Auto.
The settings are Disabled and Auto.
3-7
Chapter 3
Advanced BIOS Features
Virus Warning
Set the Virus Warning feature for IDE Hard Disk boot sector protection. If
the function is enabled, any attempt to write data into this area will cause a
beep and warning message display on screen. Settings: Disabled and Enabled
CPU L2 Cache ECC Checking
Set the ECC (Error-Correcting Code) feature for Level 2 cache. Facilitates
error detection/correction when data passes through Level 2 cache. Settings:
Enabled and Disabled
Quick Power On Self Test
Shorten Power On Self Test (POST) cycle and enable shorter bootup time.
Allow BIOS to skip some check items during POST. Settings: Enabled and
Disabled
3-8
BIOS Setup
First/Second/Third Boot Device
Set the boot device sequence as BIOS attempts to load the disk operating
system. The settings are:
Floppy
The system will boot from floppy drive.
The system will boot from LS-120 drive.
The system will boot from first HDD.
The system will boot from SCSI.
LS120
HDD-0
SCSI
CD-ROM
HDD-1
The system will boot from CD-ROM.
The system will boot from second HDD.
The system will boot from third HDD.
The system will boot from fourth HDD.
The system will boot from ATAPI ZIP drive.
The system will boot from USB floppy drive.
The system will boot from USB ZIP drive.
The system will boot from USB CDROM.
The system will boot from USB HDD.
The system will boot from network drive.
Disable this sequence.
HDD-2
HDD-3
ZIP100
USB-FDD
USB-ZIP
USB-CDROM
USB-HDD
LAN
Disabled
Boot Other Device
Enable the system to boot from other devices if the system fails to boot from
the First/Second/Third boot device. Settings: Enabled and Disabled
Swap Floppy Drive
If the system has two floppy drives, choose Enabled to assign physical drive
B to logical drive A and vice versa. Settings: Enabled and Disabled
Boot Up Floppy Seek
Set floppy seek during POST, BIOS will determine whether the floppy is 40
or 80 tracks. Settings: Enabled and Disabled
3-9
Chapter 3
Boot Up NumLock Status
Set the NumLock status when the system is powered on. On will turn key
pad into number keys, and Off will turn key pad into arrow keys. Settings: On
and Off
Typematic Rate Setting
When Disabled, the following two items (Typematic Rate and Typematic
Delay) are irrelevant. Keystrokes repeat at a rate determined by the keyboard
controller in your system. When Enabled, you can select a typematic rate and
typematic delay. Settings: Enabled and Disabled
Typematic Rate (Chars/Sec)
When Typematic Rate Setting is enabled, this item allows you to set the rate
(characters/second) at which the keys are accelerated. Settings: 6, 8, 10, 12,
15, 20, 24 and 30
Typematic Delay (Msec)
When Typematic Rate Setting is enabled, this item allows you to select the
delay between when the key was first pressed and when the acceleration
begins. Settings: 250, 500, 750 and 1000
Security Option
If you have set a password, select whether the password is required every
time the System boots, or only when you enter Setup. Settings are described
below:
Setup
The password prompt appears only when end users
try to run Setup.
System
A password prompt appears every time when the
computer is powered on or when end users try to
run Setup.
Display Full Screen Logo
Show full screen logo during BIOS bootup process. Settings: Enabled and
Disabled
3-10
BIOS Setup
Show Summary Information
Settings: Enabled and Disabled
Display Small Logo
Show small energy star logo during BIOS bootup process. Settings: Enabled
and Disabled
3-11
Chapter 3
Advanced Chipset Features
The Advanced Chipset Features menu is used for optimizing the chipset
functions.
WARNING: Do not change these settings unless you are familiar with the chipset.
AGP Aperture Size
This setting controls how much memory space can be allocated to AGP for
video purposes. The aperture is a portion of the PCI memory address range
dedicated to graphics memory address space. Host cycles that hit the
aperture range are forwarded to the AGP without any translation. Settings:
4MB, 8MB, 16MB, 32MB, 64MB, 128MB, and 256MB
AGP Mode (Internal)
This mainboard supports the AGP 4x interface. When the AGP 4x video
card is used, it can transfer video data at 1066MB/s. AGP 4x is backward-
compatible, leave the default 4x mode on if unsure. When set to 1x mode,
the maximum transfer rate it at 266MB/s, and 2x mode transfers data at
533MB/s. AGP8x mode can be detected automatically once you plug in the
AGP8x card. Settings: 4X, 2X and 1X
3-12
BIOS Setup
AGP Fast Write
When Enabled, the speed of the memory write operations will increase.
Settings: Enabled and Disabled
CPU to PCI POST Write
When Enabled, CPU can write up to four words of data to the PCI write
buffer before CPU must wait for PCI bus cycle to finish. If Disabled, CPU
must wait after each write cycle until PCI bus signals that it is ready to
receive more data. Settings: Enabled and Disabled
Select Display Device
This setting refers to the type of display being used with the system.
Settings: CRT, TV, CRT + TV, LCD and CRT + LCD
TV Layout
Settings: Default, COMP. + S-Video, S-Video + S-Video, COMP. + RGB, COMP. +
YCbCr, COMP. + SDTV-RGB, COMP. + SDTV-YPbPr, Composite, S-Video, RGB,
YCbCr, SDTV-RGB, SDTV-YPbPr, S-Video + RGB and S-Video + YCbCr
Panel Type
This setting refers to the native resolution of the display being used with the
system. Settings: 1600x1200, 1400.1050, 1280,1024, 1280x768,1024x768, 800x600
and 640x480
TV Type
Settings: NTSC and PAL
CPU Direct Access FB
Settings: Enabled and Disabled
3-13
Chapter 3
Integrated Peripherals
Onboard IDE Channel 1/2
The integrated peripheral controller contains an IDE interface with support
for two IDE channels. Choose Enabled to activate each channel separately.
Settings: Enabled and Disabled
IDE Prefetch Mode
This allows your hard disk controller to use the fast block mode to transfer
data to and from the hard disk drive. Block mode is also called block
transfer, multiple commands or multiple sector read/write. Enabled enables
IDE controller to use block mode; Disabled allows the controller to use
standard mode. Settings: Enabled and Disabled
Display Card Priority
This setting specifies which VGA card is your primary graphics adapter.
Settings: PCI Slot and AGP
Frame Buffer Size
This setting instructs the BIOS to reserved the specified amount of memory
for the internal video controller. Settings: 16M, 32M, 64M
3-14
BIOS Setup
AC97 Audio
Auto allows the mainboard to detect whether an audio device is used. If the
device is detected, the onboard VIA AC’97 (Audio Codec’97) controller will
be enabled; if not, it is disabled. Disable the controller if you want to use
other controller cards to connect to an audio device. Settings: Auto and
Disabled
VIA OnChip LAN
This setting allows you to make VIA OnChip LAN enabled or disabled.
Settings: Enabled and Disabled
OnChip USB Controller
Settings: All Enabled and All Disabled
USB Keyboard Support
Enable USB Keyboard Support for DOS and Windows. Settings: Enabled and
Disabled
Onboard 1394
Enables the onboard 1394 controller. Settings: Enabled and Disabled
Onboard Lan Boot ROM
Enable Onboard Lan Boot ROM for DOS and Windows. Settings: Enabled
and Disabled
3-15
Chapter 3
SuperIO Device
Press Enterto enter the sub-menu and the following screen appears:
Onboard FDC Controller
Enable the onboard floppy controller. Select Enabled when you have
installed a floppy disk drive. Settings: Enabled, Disabled
Onboard Serial Port 1/2
Set the base I/O port address and IRQ for the onboard serial port A/serial
port B. Selecting Auto allows BIOS to automatically determine the
correct base I/O port address. Settings:
Port
1
Settings
Disabled 3F8/IRQ4 2F8/IRQ3 3E8/IRQ4 2E8/IRQ3 Auto
Disabled 3F8/IRQ4 2F8/IRQ3 3E8/IRQ4 2E8/IRQ3 Auto
2
Onboard Parallel Port
This specifies the I/O port address and IRQ of the onboard parallel port.
Settings: Disabled, 378/IRQ7, 278/IRQ5, 3BC/IRQ7
Parallel Port Mode
Set the parallel port mode. To operate the onboard parallel port as
Standard Parallel Port, choose SPP. To operate the onboard parallel port
in the EPP mode, choose EPP. By choosing ECP, the onboard parallel port
will operate in ECP mode. Choosing ECP + EPP will allow the onboard
parallel port to support both the ECP and EPP modes simultaneously.
Settings: SPP, EPP, ECP, ECP + EPP
3-16
BIOS Setup
EPP Mode Select
EPP (Enhanced Parallel Port) comes in two modes: 1.9 and 1.7. EPP 1.9
is the newer version of the protocol and is backwards compatible with
most EPP devices. If your EPP device does not work with the EPP 1.9
setting, try changing the setting to EPP 1.7.
Settings: EPP 1.9, EPP 1.7
ECP Mode Use DMA
ECP (Extended Capabilities Port) has two DMA channels that it can use.
The default channel is 3. However, some expansion cards may use
channel 3 as well. To solve this conflict, change the ECP channel to 1.
Select a DMA channel for the port. Settings: 1, 3
Onboard Fast IR
Enables or disables the infrared port. Settings: Enabled and Disabled
Fast IR IRQ
Set this field to reserve an IRQ for the Fast IR port. This field is only
available if Onboard Fast IR is enabled. Settings: 3, 4, 5, 11
Fast IR DMA
Set this field to choose the DMA channel. This field is only available if
Onboard Fast IR is enabled. Settings: 6, 5
3-17
Chapter 3
Power Management Setup
The Power Management Setup menu configures the system to most
effectively save energy while operating in a manner consistent with your
own style of computer use.
ACPI Suspend Type
Set the power saving mode for ACPI function. Settings are:
S1(POS)
S1/Power On Suspend (POS) is a low power state. In
this state, no system context (CPU or chipset) is lost
and hardware maintains all system context.
S3(STR)
S3/Suspend To RAM (STR) is a power-down state. In
this state, power is supplied only to essential
components such as main memory and wakeup-
capable devices. The system context is saved to
main memory, and context is restored from the
memory when a “wakeup” event occurs.
S1 & S3
Depends on OS to select S1 or S3.
HDD Power Down
Set the time to power down HDD after hard disk inactivity. Settings: Disabled
and 1~15 (minutes)
3-18
BIOS Setup
Power Management Timer
Set the idle time before system enters power saving mode. ACPI OS such as
Windows XP will override this option. Settings: Disabled and 1/2/4/6/8/10/20/
30/40 (minutes) and 1 (hour)
Video Off Option
Select whether or not to turn off the screen when system enters power saving
mode, ACPI OS such as Windows XP will override this option. Settings are:
Always On
The screen is always on even when system
enters power saving mode.
Suspend -> Off
The screen is turned off when system enters
power saving mode.
Power Off by PWRBTN
This field configures the power button function. Settings are:
Delay 4 Sec
The system is turned off if power button is pressed
for more than four seconds.
Instant-Off
The power button functions as a normal power-on/-
off buttton.
Run VGABIOS if S3 Resume
Select whether to run VGA BIOS if resumed from S3 state. This is only
necessary for older VGA drivers, select Auto if in doubt. Settings: Auto, Yes
and No
AC Loss Auto restart
The field defines how the system will act after an AC power loss during
system operation. Off will keep the system in an off stat until the power
button is pressed. When set to On the system will restart when the power is
back. Former-Sts will restore the system to its previous state. Settings: Off, On,
Former-Sts
3-19
Chapter 3
Peripheral Activities
Press Enterto enter the sub-menu and the following screen appears:
VGA Event
Decide whether or not the power management unit should monitor VGA
activities. Settings: Off and On
LPT & COM Event
Decide whether or not the power management unit should monitor
parallel port (LPT) and serial port (COM) activities. Settings: None, LPT,
COM and LPT/COM
HDD & FDD Event
Decide whether or not the power management unit should monitor hard
disks and floppy drives activities. Settings: Off and On
PCI Master Event
Decide whether or not the power management unit should monitor PCI
master activities. Settings: Off and On
PS2KB Wakeup Select
When select Password, please press Page Upor Page Downkey to
change Password, 8 characters maximum. Please note that PS2MS
Wakeup from suspend and PS2KB Wakeup from suspend will be
disabled while changing the passward. Settings: Hot key and Password
3-20
BIOS Setup
PS2MS Wakeup from S3/S4/S5
This setting can be used to wakeup the system from power saving mode
through mouse. Settings: Disabled and Enabled
PS2KB Wakeup from S3/S4/S5
Select which Hot-Key to wake-up the system from power saving mode.
Settings: Disabled, Ctrl+F1, Ctrl+F2, Ctrl+F3, Ctrl+F4, Ctrl+F5, Ctrl+F6, Ctrl+F7,
Ctrl+F8, Ctrl+F9, Ctrl+F10, Ctrl+F11, Ctrl+F12, Power, Wake and Any Key
USB Resume
Decide whether or not USB devices can wake the system from suspend
state. Settings: Disabled and Enabled
PowerOn by PCI Card
Decide whether or not any PCI card can power up the system or resume
from suspend state. Such PCI cards include LAN, onboard USB ports,
etc. Settings: Disabled and Enabled
Wake On LAN/Ring Connector
Decide whether or not any Ring-In signals from the modem can wake up
the system or resume from suspend state. Settings: Disabled and Enabled
RTC Alarm Resume
The field is used to enable or disable the feature of booting up the system
on a scheduled time/date. Settings: Disabled and Enabled
Date (of Month)
This field can only be set if RTC Alarm Resume is enabled. The field
specifies the date for RTC Alarm Resume.
Resume Time (hh:mm:ss)
This field can only be set if RTC Alarm Resume is enabled. The field
specifies the time for RTC Alarm Resume.
3-21
Chapter 3
IRQs Activities
Press Enterto enter the sub-menu and the following screen appears:
Primary INTR
Selecting On will cause the system to wake up from power saving modes
if activity is detected from any enabled IRQ channels. Settings: Off, On
IRQ3~IRQ15
Enables or disables the monitoring of the specified IRQ line. If set to
Enabled, the activity of the specified IRQ line will prevent the system
from entering power saving modes or awaken it from power saving
modes. These fields are only available if Primary INTR is on. Settings:
Enabled and Disabled
Note: IRQ (Interrupt Request) lines are system resources allocated to I/O devices.
When an I/O device needs to gain attention of the operating system, it signals this
by causing an IRQ to occur. After receiving the signal, when the operating system is
ready, the system will interrupt itself and perform the service required by the IO
device.
3-22
BIOS Setup
PNP/PCI Configurations
This section describes the BIOS configuration of the PCI bus system. This
section covers some very technical items and it is strongly recommended
that only experienced users should make any changes to the default settings.
PNP OS Installed
When set to Yes, BIOS will only initialize the PnP cards used for booting
(VGA, IDE, SCSI). The rest of the cards will be initialized by the PnP
®
operating system like Windows 95 or 98/98SE. When set to No, BIOS will
initialize all the PnP cards. Set to Yes the operating system is Plug & Play
capable. Settings: No and Yes
Reset Configuration Data
Normally, you leave this field Disabled. Select Enabled to reset Extended
System Configuration Data (ESCD) when you exit Setup if you have
installed a new add-on and the system reconfiguration has caused such a
serious conflict that the operating system can not boot. Settings: Enabled and
Disabled
Resource Controlled By
The BIOS can automatically configure all the boot and Plug and Play
compatible devices. Choose Auto(ESCD) if unsure, the BIOS will
automatically assign IRQ, DMA and memory base address fields. Settings:
Auto (ESCD) and Manual
3-23
Chapter 3
Assign IRQ For VGA/USB
Assign IRQ for VGA and USB devices. Settings: Disabled and Enabled
3-24
BIOS Setup
IRQ Resources
The items are adjustable only when Resources Controlled By is set to Manual.
Press Enterand you will enter the sub-menu of the items.
IRQ Resources list IRQ 3/4/5/7/9/10/11/12/14/15 for users to set each IRQ a
type depending on the type of device using the IRQ. Settings:
PCI Device
For Plug & Play compatible devices designed for PCI
bus architecture.
Reserved
The IRQ will be reserved for further request.
3-25
Chapter 3
PC Health Status
This section shows the status of your CPU, fan, warning for overall system
status.
The PC Health Status displays the current status of all of the monitored
hardware devices/components such as CPU voltages, temperatures and fan
speeds.
3-26
BIOS Setup
Frequency / Voltage Control
DRAM Clock
The chipset supports synchronous and asynchronous mode between host
clock and DRAM clock frequency. Settings: 100 MHz, 133 MHz, and By SPD
DRAM Timing
The value in this field depends on the memory modules installed in your
system. Changing the value from the factory setting is not recommended
unless you install new memory that has a different performance rating than
the original modules. Settings: Manual and By SPD
DRAM CAS Latency
This item adjusts the speed it takes for the memory module to complete a
command. Generally, a lower setting will improve the performance of your
system. However, if your system becomes less stable, you should change it
to a higher setting. This field is only available when DRAM Timing is set to
Manual. Settings: 2, 2.5
3-27
Chapter 3
Bank Interleave
Set the interleave mode of the SDRAM interface. Interleaving allows banks
of SDRAM to alternate their refresh and access cycles. One bank will
undergo its refresh cycle while another is being accessed. This improves
performance of the SDRAM by masking the refresh time of each bank. This
field is only available when DRAM Timing is set to Manual. Settings:
Disabled, 2 Bank, 4 Bank
Precharge to Active (Trp)
This field controls the length of time it takes to precharge a row in the
memory module before the row becomes active. Longer values are safer but
may not offer the best performance. This field is only available when DRAM
Timing is set to Manual. Settings: 2T, 3T
Active to Precharge (Tras)
This field controls the length of time a row stays active before precharging.
Longer values are safer buy may not offer the best performance. This field is
only available when DRAM Timing is set to Manual. Settings: 5T, 6T
Active to CMD (Trcd)
This field is only available when DRAM Timing is set to Manual. Settings:
2T, 3T
DRAM Command Rate
This field controls how fast the memory controller sends out commands.
Lower setting equals faster command rate. Please note that some memory
modules may not be able to handle lower settings. Settings: 2T Command, 1T
Command
DRAM Burst Len
This field sets the length of time for one burst of data during a read/write
transaction. Longer settings equals better memory performance. Settings: 4,
8
3-28
BIOS Setup
DRAM Voltage
This field sets the voltage for the memory module. Settings: 2.8V, 2.7V, 2.6V,
Default
CPU Clock
This field sets the CPU clock speed.
Spread Spectrum
When the mainboard’s clock generator pulses, the extreme values (spikes) of
the pulses creates EMI (Electromagnetic Interference). The Spread Spectrum
function reduces the EMI generated by modulating the pulses so that the
spikes of the pulses are reduced to flatter curves.
3-29
Chapter 3
Load Fail-Safe Defaults
This option on the main menu allows users to restore all the BIOS settings to
the default Fail Safe values. These values are set by the mainboard
manufacturer to provide a minimal and stable system.
When you select Load-Fail Safe Defaults, a message as below appears:
Entering Y loads the default BIOS values that provide a minimal and stable
system configuration.
3-30
BIOS Setup
Load Optimized Defaults
This option on the main menu allows users to restore all the BIOS settings to
the default Optimized values. The Optimized Defaults are the default values
also set by the mainboard manufacturer for both optimized and stable
performance of the mainboard.
When you select Load Optimized Defaults, a message as below appears:
Entering Y loads the default values that are factory settings for optimal and
stable system performance.
3-31
Chapter 3
Set Supervisor / User Password
When you select this function, a message as below will appear on the screen:
Type the password, up to eight characters in length, and press Enter. The
password typed now will clear any previously set password from CMOS
memory. You will be prompted to confirm the password. Re-type the
password and press Enter. You may also press Escto abort the selection
and not enter a password.
To clear a set password, just press Enterwhen you are prompted to enter
the password. A message will show up confirming the password will be
disabled. Once the password is disabled, the system will boot and you can
enter Setup without entering any password.
When a password has been set, you will be prompted to enter it every time
you try to enter Setup. This prevents an unauthorized person from changing
any part of your system configuration.
There are two types of passwords you can set. A Supervisor password and a
User password. When a Supervisor password is used, the user can start
BIOS Setup program and change the settings of the setup menus. When a
User password is used, the user can start the BIOS Setup program but does
not have the right to change the settings of the setup menus.
3-32
BIOS Setup
Additionally, when a password is enabled, you can also have BIOS to
request a password each time the system is booted. This would prevent
unauthorized use of your computer. The setting to determine when the
password prompt is required is the Security Option of the Advanced BIOS
Features menu. If the Security Option is set to System, the password is
required both at boot and at entry to Setup. If set to Setup, password prompt
only occurs when trying to enter Setup.
3-33
Chapter 3
Save & Exit Setup
When you want to quit the Setup menu, you can select this option to save the
changes and quit. A message as below will appear on the screen:
Entering Y will allow you to quit the Setup Utility and save the user setup
changes to RTC CMOS.
Entering N will return to the Setup Utility.
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BIOS Setup
Exit Without Saving
When you want to quit the Setup menu, you can select this option to abandon
the changes. A message as below will appear on the screen:
Entering Y will allow you to quit the Setup Utility without saving any
changes to RTC CMOS.
Entering N will return to the Setup Utility.
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Chapter 3
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Chapter
Driver Installation
This chapter gives you brief descriptions of each
mainboard drivers and applications. You must
install VIA chipset drivers first before installing
other drivers such as audio or VGA drivers. The
applications will only function correctly if the
necessary drivers are already installed.
This chapter includes the following sections:
Driver Utilities
CD Content
4-2
4-3
4-1
Chapter 4
Driver Utilities
Getting Started
The mainboard includes a Driver Utilities CD which contains driver utilities
and software to enhance the performance of the mainboard. Please check
that you have this CD in your retail box. If the CD is missing in your retail
box, please contact your local dealer for the CD.
Note: The driver utilities and software are updated from time to time. Please visit
and utilities.
Running the Driver Utilities CD
To start using the CD, just simply insert the CD into your local CD-ROM or
DVD-ROM drive. The CD should run automatically when you close your
CD-ROM or DVD-ROM drive. The driver utilities and software menu
screen should then appear on your desktop. If the CD does not run
automatically, you can run the CD manually by typing “D:\Setup.exe” at
Start\Run.
(Please note that D: might not be your CD-ROM/DVD-ROM drive letter. Make sure
you type the correct letter of CD-ROM/DVD-ROM drive on your system).
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Driver Installation
CD Content
The driver utilities and software in this CD are:
• VIA 4in1 Drivers: Contains VIA ATAPI Vendor Support Driver
(enables the performance enhancing bus mastering functions on ATA-
capable Hard Disk Drives and ensures IDE device compatibility), AGP
VxD Driver (provides service routines to your VGA driver and
interface directly to hardware, providing fast graphical access), IRQ
Routing Miniport Driver (sets the system’s PCI IRQ routing sequence)
and VIA INF Driver (enables the VIA Power Management function).
• VIA VGA Driver: Enhances the onboard VIA graphic chip.
• VIA Audio Driver: Enhances the onboard VIA audio chip.
• VIA LAN Driver: Enhances the onboard VIA LAN chip.
• VIA USB 2.0 Driver: Enhances VIA USB 2.0 ports.
• VIA TV-out Utility: Enhances the TV-out by enabling display position
adjustment.
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Chapter 4
4-4
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