DFI AM75-EC, AM75-TC, AK74-SC, AK74-AC, AK74-EC User Manual

AM75-EC

AM75-TC

Rev. A+

System Board Users Manual

Carte Mère Manuel Pour Utilisateur

System-Platine Benutzerhandbuch
Manual del Usuario de Placas Base

48110118

Copyright

This publication contains information that is protected by
copyright. No part of it may be reproduced in any form or by
any means or used to make any transformation/adaptation
without the prior written permission from the copyright holders.

This publication is provided for informational purposes only. The
manufacturer makes no representations or warranties with respect to
the contents or use of this manual and specifically disclaims any
express or implied warranties of merchantability or fitness for any
particular purpose. The user will assume the entire risk of the use or
the results of the use of this document. Further, the manufacturer
reserves the right to revise this publication and make changes to its
contents at any time, without obligation to notify any person or
entity of such revisions or changes.

© 2001. All Rights Reserved.

Trademarks

Microsoft® MS-DOS®, WindowsTM, Windows® 95, Windows® 98,
Windows® 98 SE, Windows® ME, Windows® 2000 and Windows
NT® 4.0 are registered trademarks of Microsoft Corporation.
AMD, AthlonTM and DuronTM are registered trademarks of
Advanced Micro Devices, Inc. VIA is a registered trademark of
VIA Technologies, Inc. Award is a registered trademark of Award
Software, Inc. Other trademarks and registered trademarks of
products appearing in this manual are the properties of their
respective holders.

Caution

To avoid damage to the system:
 Use the correct AC input voltage range.

To reduce the risk of electric shock:
 Unplug the power cord before removing the system chassis

cover for installation or servicing. After installation or servicing,
cover the system chassis before plugging the power cord.

Battery:
 Danger of explosion if battery incorrectly replaced.
 Replace only with the same or equivalent type recommend by

the manufacturer.

 Dispose of used batteries according to the battery

manufacturers instructions.

Joystick or MIDI port:
 Do not use any joystick or MIDI device that requires more than

10A current at 5V DC. There is a risk of fire for devices that
exceed this limit.

FCC and DOC Statement on Class B

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 residential
installation. 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. 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 the receiver.
 Connect the equipment into 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.

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.

2. Shielded interface cables must be used in order to comply with
the emission limits.

4

Quick Setup Guide



Quick Setup

Guide

Table of Contents

Chapter 1

Quick Setup Guide.............................................

Chapter 2

English......................................................................

Chapter 3

Français (French).................................................

Chapter 4

Deutsch (German)................................................

Chapter 5

Español (Spanish)..................................................

5

25

47

69

93

Note:

The users manual in the provided CD contains detailed information
about the system board. If, in some cases, some information doesnt
match those shown in this manual, this manual should always be
regarded as the most updated version.

5



Quick Setup Guide

Quick Setup

Guide

Chapter 1 - Quick Setup Guide

Table of Contents

1.1 System Board Layout..................................................................................................

1.2 Jumpers.....................................................................................................................................

1.3 Ports and Connectors................................................................................................

1.4 Award BIOS Setup Utility.......................................................................................

6

8

11

20

AM75-EC

(VIA® KM133)

AM75-TC

(VIA® KM133A)

Chipset

CPU

JP10
(CPU FSB select)

VT8365/686B

100MHz FSB

û

VT8365A/686B

100/133MHz FSB

ü

This users manual is for the AM75-EC and AM75-TC system
boards. The differences between these boards are shown below.

6

Quick Setup Guide

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Quick Setup

Guide

1.1 System Board Layout

AM75-EC

(Uses VIA® KM133 - VT8365 and VT82C686B;

supports 100MHz FSB CPUs)

7

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Quick Setup Guide

Quick Setup

Guide

AM75-TC

(Uses VIA® KM133A - VT8365A and VT82C686B;

supports 100MHz/133MHz FSB CPUs)

8

Quick Setup Guide



Quick Setup

Guide

1.2 Jumpers

1.2.1 CPU Frequency Ratio - SW1

We do not recommend that you
adjust the CPU to a higher
frequency ratio because it may result
to the CPUs or systems instability
and are not guaranteed to provide
better system performance. If you
are unable to boot up the system
with the frequency ratio you
selected, please power off the
system and set SW1 pins 1-5 to
Off (Auto).

Ratio

Auto

5x

5.5x

6x

6.5x

7x

7.5x

8x

8.5x

9x

9.5x
10x

10.5x
11x

11.5x
12x

12.5x

1

Off
On
On
On
On
On
On
On
On
On
On
On
On
On
On
On
On

2

Off
On
Off
On
Off
On
Off
On
Off
On
Off
On
Off
On
Off
On
Off

3

Off
On
On
Off
Off
On
On
Off
Off
On
On
Off
Off
On
On
Off
Off

4

Off
Off
Off
Off
Off
On
On
On
On
Off
Off
Off
Off
On
On
On
On

5

Off
On
On
On
On
Off
Off
Off
Off
Off
Off
Off
Off
On
On
On
On

9

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Quick Setup Guide

Quick Setup

Guide

1.2.2 Clear CMOS Data - JP8

2-3 On:
Clear CMOS Data

1-2 On:
Normal (default)

1

2

3

1

2

3

1.2.3 Onboard Audio Codec - JP4, JP5 and JP6

1-2 On:
Enable the
Onboard Audio
Codec (default)

2-3 On:
Disable the
Onboard Audio
Codec

1

2

3

JP5JP4 JP6

1

2

3

JP5JP4 JP6

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Quick Setup Guide

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Quick Setup

Guide

1.2.5 Power Select for USB 1 (JP3) and USB 2 (JP50)

2-3 On: 5VSB

1-2 On: 5V
(default)

1

2

3

1

2

3

1.2.4 CPUs Front Side Bus - JP10 (AM75-TC)

1

2

On: 100MHz
(200MHz DDR) CPU

(default)

Off: 133MHz
(266MHz DDR) CPU

1

2

11

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Quick Setup Guide

Quick Setup

Guide

1.3 Ports and Connectors

1.3.1 PS/2 Mouse and PS/2 Keyboard Ports

Make sure to turn off your computer
prior to connecting or disconnecting a
mouse or keyboard. Failure to do so
may damage the system board.

PS/2 Mouse

PS/2 Keyboard

1.3.2 Universal Serial Bus Ports

USB 1

USB 2
(J19)

1 VCC
2 UP2­3 UP2+
4 Ground
5 Key

6 VCC
7 UP3­8 UP3+
9 Ground
10 Ground

11 Ground
12 Ground
13 UP2+
14 UP2­15 VCC

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Quick Setup Guide

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Quick Setup

Guide

1.3.3 Parallel Port

Parallel Port

1.3.4 Serial Ports

COM 2
(J50)

COM 1

Serial Port

One card-edge bracket mounted
with a serial port cable is provided
for connecting the COM 2
secondary serial por t.

13

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Quick Setup Guide

Quick Setup

Guide

1.3.6 Game/MIDI Port and Audio Jacks

Game/MIDI Port
Audio Jacks

Line-out

Line-in

Mic-in

1.3.5 VGA Port

VGA Port

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Quick Setup Guide

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Quick Setup

Guide

1.3.7 Internal Audio Connectors

1 Left audio channel
2 Ground
3 Ground
4 Right audio channel

1 Modem-out (from modem)
2 Ground
3 Ground
4 Modem-in (to modem)

AUX-in / CD-in

TA D

1.3.8 Floppy and IDE Disk Drive Connectors

If you encountered problems while using an ATAPI CD-ROM drive that is
set in Master mode, please set the CD-ROM drive to Slave mode. Some
ATAPI CD-ROMs may not be recognized and cannot be used if
incorrectly set in Master mode.

FDD

IDE

15

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Quick Setup Guide

Quick Setup

Guide

1.3.10 Fan Connectors

1On
2 +12V
3 Sense

1 On/Off
2 +12V
3 Sense

1 Ground
2 +12V
3N. C.

CPU Fan

Chassis Fan

Second Chassis Fan

1.3.9 IrDA Connector

1 VCC
2 N. C.
3 IRRX
4 Ground
5 IRTX

The sequence of the pin functions on
some IrDA cable may be reversed
from the pin function defined on the
system board. Make sure to connect
the cable to the IrDA connector
according to their pin functions.

16

Quick Setup Guide

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Quick Setup

Guide

1.3.11 Wake-On-LAN Connector

The 5VSB power source of your power

supply must support ≥720mA.

1 +5VSB
2 Ground
3 WOL

1.3.12 Wake-On-Ring Connector

1 Ground
2 RI#

If you are using a modem add-in card,
the 5VSB power source of your power

supply must support ≥720mA.

17

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Quick Setup Guide

Quick Setup

Guide

1.3.13 Power Connector

1 3.3V
2 3.3V
3 Ground
4 +5V
5 Ground
6 +5V
7 Ground
8 PW-OK
9 5VSB
10 +12V

11 3.3V
12 -12V
13 Ground
14 PS-ON
15 Ground
16 Ground
17 Ground
18 -5V
19 +5V
20 +5V

The system board requires a minimum of 300W electric current.

18

Quick Setup Guide

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Quick Setup

Guide

1.3.14 AGP 4x LED / DIMM/PCI Standby Power LED

The AGP 4x LED will light only when the AGP slot is installed with a 4x
add-in card.

The DIMM Standby Power LED will turn red when the systems power is
on or when it is in the Suspend state (Power On Suspend or Suspend to
RAM). It will not light when the system is in the Soft-Off state.

The PCI Standby Power LED will turn red when the system is in the
power-on, Soft-Off or Suspend (Power On Suspend or Suspend to RAM)
state.

Lighted LEDs serve as a reminder that you must power-off the system
then turn off the power supplys switch or unplug the power cord prior to
installing any memory modules or add-in cards.

On: Default

3.3VSB Standby Power to PCI slots
(PCI 2.2 spec.)

Off:

Non-PCI 2.2 spec.

12 12

3.3VSB Standby for PCI - Jumper JP1

19

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Quick Setup Guide

Quick Setup

Guide

1.3.15 Front Panel Connectors

1 HDD LED Power
2 HDD
3 N. C.
4 Green LED Power
5 Ground
6 N. C.
7 PWRBT+
8 PWRBT­9 N. C.
10 SMI
11 Ground
12 N. C.
13 H/W Reset

14 Ground
15 N. C.
16 Speaker Data
17 N. C.
18 Ground
19 Speaker Power
20 N. C.
21 LED Power (+)
22 N.C.
23 LED Power (-) or

Standby Signal

20

Quick Setup Guide



Quick Setup

Guide

1.4 Award BIOS Setup Utility

1.4.1 Main Menu

1.4.2 Standard CMOS Features

CMOS Setup Utility - Copyright (C) 1984-2000 Award Software

Standard CMOS Features

Advanced BIOS Features

Advanced Chipset Features

Integrated Peripherals

Power Management Setup

PnP/PCI Configurations

PC Health Status

Frequency/Voltage Control

Load Fail-Safe Defaults

Load Optimized Defaults

Set Supervisor Password

Set User Password

Save & Exit Setup

Exit Without Saving

Esc
F10

: Quit
: Save & Exit Setup

↑↓→←

: Select Item

Time, Date, Hard Disk Type...

The settings on the screen are for reference only. Your version may not be
identical to this one.

↑↓→← :Move

CMOS Setup Utility - Copyright (C) 1984-2000 Award Software

Standard CMOS Features

Date (mm:dd:yy)
Time (hh:mm:ss)

IDE Primary Master
IDE Primary Slave
IDE Secondary Master
IDE Secondary Slave

Drive A
Drive B

Video
Halt On

Base Memory
Extended Memory
Total Memory

F6:Fail-Safe Defaults F7:Optimized Defaults

F1:General Help

Wed, Feb 28 2001
4 : 35 : 5

Press Enter None
Press Enter None
Press Enter None
Press Enter None

1.44M, 3.5 in.
None

EGA/VGA
All, But Keyboard

640K
129024K
130048K

Item Help

Menu Level
Change the day, month,

year and century

Enter:Select

F5:Previous Values

+/-/PU/PD:Value F10:Save ESC:Exit

K
K
K
K

21



Quick Setup Guide

Quick Setup

Guide

1.4.3 Advanced BIOS Features

1.4.4 Advanced Chipset Features

CMOS Setup Utility - Copyright (C) 1984-2000 Award Software

Advanced BIOS Features

Item Help

Menu Level
Allows you to choose

the VIRUS warning
feature for IDE Hard
Disk boot sector
protection. If this
function is enabled and
someone attempt to
write data into this
area, BIOS will show a
warning message on
screen and alarm beep

↑↓→← Move F1:General HelpEnter:Select +/-/PU/PD:Value F10:Save ESC:Exit

X
X

Virus Warning
CPU L1 Cache
CPU L2 Cache
CPU L2 Cache ECC Checking
Quick Power On Self Test
First Boot Device
Second Boot Device
Third Boot Device
Boot Other Device
Swap Floppy Drive
Boot Up Floppy Seek
Boot Up NumLock Status
Typematic Rate Setting

Typematic Rate (Chars/Sec)
Typematic Delay (Msec)

Security Option
OS Select For DRAM > 64MB
HDD S.M.A.R.T. Capability

Disabled
Enabled
Enabled
Enabled
Enabled
Floppy
HDD-0
LS120
Enabled
Disabled
Disabled
Off
Disabled

6
250

Setup
Non-OS2
Disabled

F6:Fail-Safe Defaults F7:Optimized DefaultsF5:Previous Values

The settings on the screen are for reference only. Your version may not be
identical to this one.

CMOS Setup Utility - Copyright (C) 1984-2000 Award Software

Advanced Chipset Features

The settings on the screen are for reference only. Your version may not be
identical to this one.

X

Item Help

Menu Level

↑↓→← Move

F6:Fail-Safe Defaults F7:Optimized Defaults

F1:General HelpEnter:Select

F5:Previous Values

+/-/PU/PD:Value

F10:Save

ESC:Exit

DRAM Timing By SPD
SDRAM Cycle Length
DRAM Clock
System BIOS Cacheable
Video RAM Cacheable
Frame Buffer Size
AGP Aperture Size
AGP Mode
AGP Driving Control

AGP Driving Value

AGP Fast Write
OnChip USB
USB Keyboard Support
OnChip Sound

Disabled
3
133M
Disabled
Disabled
8M
64M
4X
Auto

DA

Disabled
Enabled
Disabled
Auto

22

Quick Setup Guide

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Quick Setup

Guide

1.4.5 Integrated Peripherals

The screen above list all the fields available in the Integrated Peripherals
submenu, for ease of reference in this manual. In the actual CMOS setup,
you have to use the scroll bar to view the fields. The settings on the screen
are for reference only. Your version may not be identical to this one.

X
X

CMOS Setup Utility - Copyright (C) 1984-2000 Award Software

Integrated Peripherals

Item Help

Menu Level

↑↓→← Move

F6:Fail-Safe Defaults F7:Optimized Defaults

F1:General HelpEnter:Select

F5:Previous Values

+/-/PU/PD:Value F10:Save ESC:Exit

On-Chip Primary IDE
On-Chip Secondary IDE
IDE Prefetch Mode
IDE Primary Master PIO
IDE Primary Slave PIO
IDE Secondary Master PIO
IDE Secondary Slave PIO
IDE Primary Master UDMA
IDE Primary Slave UDMA
IDE Secondary Master UDMA
IDE Secondary Slave UDMA
Init Display First
IDE HDD Block Mode
Onboard FDD Controller
Onboard Serial Port 1
Onboard Serial Port 2
UART2 Mode Select

IR Function Duplex
TX,RX Inverting Enable

Onboard Parallel Port
Parallel Port Mode
ECP Mode Use DMA
EPP Mode Select
Onboard Legacy Audio
Sound Blaster
SB I/O Base Address
SB IRQ Select
SB DMA Select
MPU-401
MPU-401 I/O Address
Game Port (200-207H)

Enabled
Enabled
Enabled
Auto
Auto
Auto
Auto
Auto
Auto
Auto
Auto
PCI Slot
Enabled
Enabled
3F8/IRQ4
2F8/IRQ3
Standard

Half
No, Yes

378/IRQ7
ECP/EPP
3
EPP1.7
Enabled
Disabled
220H
IRQ 5
DMA 1
Disabled
330-333H
Enabled

23

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Quick Setup Guide

Quick Setup

Guide

1.4.7 PnP/PCI Configurations

1.4.6 Power Management Setup

The settings on the screen are for reference only. Your version may not be
identical to this one.

CMOS Setup Utility - Copyright (C) 1984-2000 Award Software

Power Management Setup

ACPI Function
Power Management
ACPI Suspend Type
PM Control by APM
Video Off Option
Video Off Method
MODEM Use IRQ
Soft-Off By PWRBTN
PWR Lost Resume State
Wake Up Events

Enabled
Press Enter
S1(POS)
Yes
Suspend -> Off
V/H SYNC+Blank
3
Instant-off
Keep Off
Press Enter

Item Help

Menu Level

↑↓→← Move

F6:Fail-Safe Defaults F7:Optimized Defaults

F1:General HelpEnter:Select

F5:Previous Values

+/-/PU/PD:Value F10:Save ESC:Exit

K

K

The settings on the screen are for reference only. Your version may not be
identical to this one.

X

CMOS Setup Utility - Copyright (C) 1984-2000 Award Software

PnP/PCI Configurations

Reset Configuration Data
Resources Controlled By

IRQ Resources

PCI/VGA Palette Snoop
Assign IRQ For VGA
Assign IRQ For USB

Disabled
Auto(ESCD)

Press Enter

Disabled
Enabled
Enabled

Item Help

Menu Level
Default is 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 OS
cannot boot.

↑↓→← Move

F6:Fail-Safe Defaults F7:Optimized Defaults

F1:General HelpEnter:Select

F5:Previous Values

+/-/PU/PD:Value F10:Save ESC:Exit

24

Quick Setup Guide



Quick Setup

Guide

1.4.9 Frequency/Voltage Control

1.4.8 PC Health Status

The settings on the screen are for reference only. Your version may not be
identical to this one.

CMOS Setup Utility - Copyright (C) 1984-2000 Award Software

PC Health Status

Current System Temp.
Current CPU Temperature
Current CPU Fan Speed
Current Chassis Fan Speed
Vcore

CPU Fan Protection
CPU Temp. Prot. Function
CPU Temp. Prot. Alarm

27C/80F
37C/98F

0 RPM
0 RPM

Disabled
Disabled
60

Item Help

Menu Level

↑↓→← Move

F6:Fail-Safe Defaults F7:Optimized Defaults

F1:General HelpEnter:Select

F5:Previous Values

+/-/PU/PD:Value F10:Save ESC:E xit

1.75 V

3.31 V

5.05 V

12.03 V

3.3V
5V

12V

The settings on the screen are for reference only. Your version may not be
identical to this one.

CMOS Setup Utility - Copyright (C) 1984-2000 Award Software

Frequency/Voltage Control

CPU Vcore Select
Spread Spectrum Modulated
CPU Host/PCI Clock

Default
Disabled
Default

Item Help

Menu Level

↑↓→← Move

F6:Fail-Safe Defaults F7:Optimized Defaults

F1:General HelpEnter:Select

F5:Previous Values

+/-/PU/PD:Value F10:Save ESC:E xit

25

English

English

Table of Contents

Chapter 2 - English

Package Checklist

The system board package contains the following items:

þ The system board
þ A users manual
þ One card-edge bracket with a serial port
þ One IDE cable for ATA/33, ATA/66 or ATA/100 IDE drives
þ One 34-pin floppy disk drive cable
þ One Main Board Utility CD

If any of these items are missing or damaged, please contact your
dealer or sales representative for assistance.

2.1 Features and Specifications.....................................................................................

2.2 Identifying a CPU that Supports the Multiplier

Overclocking Function.................................................................................................

2.3 Using the CPU Fan Protection Function...................................................

2.4 Using the CPU Temperature Protection Function.............................

2.5 Using the Suspend to RAM Function..........................................................

2.6 Supported Softwares...................................................................................................

2.7 Troubleshooting.................................................................................................................

26

33

34

35

36

38

42

Note:

The users manual in the provided CD contains detailed information
about the system board. If, in some cases, some information doesnt
match those shown in this manual, this manual should always be
regarded as the most updated version.

26

English

English

2.1 Features and Specifications

2.1.1 Features

Chipset

 VIA® KM133 - VT8365 and VT82C686B (AM75-EC)
 VIA® KM133A - VT8365A and VT82C686B (AM75-TC)

Processor

The system board is equipped with a switching voltage regulator
that automatically detects 1.100V to 1.850V.

 AM75-EC

- AMD AthlonTM/DuronTM 100MHz (200MHz DDR) FSB pro­cessor (600/650/700/750/800/850/900/950MHz, 1GHz,

1.1GHz, 1.2GHz or future processors)

 AM75-TC

- AMD AthlonTM/DuronTM 100/133MHz (200/266MHz DDR)
FSB processor (600/650/700/750/800/850/900/950MHz,
1GHz, 1.1GHz, 1.2GHz or future processors)

System Memory

 Supports up to 1.5GB using VCM (Vir tual Channel Memory) or

PC SDRAM DIMM (unbuffered or registered)

- Registered DIMM - PC-100 only.

 Three 168-pin DIMM sockets
 Uses x64 PC SDRAM, 3.3V

- PC-100 SDRAM DIMM for 100MHz memory bus

- PC-133 SDRAM DIMM for 133MHz memory bus

 L2 cache memory

- Duron

TM

processor: built-in 64KB Level 2 pipelined burst

cache

- Athlon

TM

processor: built-in 256KB Level 2 pipelined burst

cache

Note:

 PC-100 SDRAM DIMM is supported when used with

100MHz FSB processor.

 PC-133 SDRAM DIMM is supported when used with

100MHz FSB or 133MHz FSB processor.

27

English

English

DIMMs

2MBx64
4MBx64
8MBx64

Memory Size

16MB
32MB
64MB

DIMMs

16MBx64
32MBx64
64MBx64

Memory Size

128MB
256MB
512MB

Expansion Slots

The system board is equipped with 1 universal AGP slot, 4
dedicated PCI slots and 1 shared PCI/ISA slot.

AGP is an interface designed to support high performance 3D
graphics cards. It utilizes a dedicated pipeline to access system
memory for texturing, z-buffering and alpha blending. The universal
AGP slot supports AGP 2x with up to 533MB/sec. bandwidth and
AGP 4x with up to 1066MB/sec. bandwidth for 3D graphics
applications. AGP in this system board will deliver faster and better
graphics to your PC.

Onboard Graphics Features

 Integrated Savage4 2D/3D/Video accelerator

- Shares 2MB to 32MB of the system memory

- Optimized Shared Memory Architecture (SMA)

- Full AGP 4x, including sideband addressing and execute mode

- High quality DVD video playback

 3D rendering features

- 32-bit true color rendering

- MPEG-2 video textures
 2D hardware acceleration features
 Motion video architecture
 Software drivers

- Windows® 95/98/2000/ME

- Windows NT® 4.0

 If you are using more than one DIMM, make sure you

insert the same type of DIMMs into the DIMM sockets.
Using different types (VCM or PC SDRAM) of DIMMs may
cause problems.

28

English

English

Onboard Audio Features

 Supports Microsoft® DirectSound/DirectSound 3D
 AC97 supported with full duplex, independent sample rate con-

verter for audio recording and playback

ATX Double Deck Ports (PC 99 color-coded connectors)

 Two USB ports
 One NS16C550A-compatible DB-9 serial por t
 One DB-15 VGA por t
 One SPP/ECP/EPP DB-25 parallel port
 One mini-DIN-6 PS/2 mouse port
 One mini-DIN-6 PS/2 keyboard port
 One game/MIDI por t
 Three audio jacks: line-out, line-in and mic-in

Connectors

 One connector for 2 additional external USB por ts
 One connector for 1 external serial port
 One connector for IrDA interface
 Two IDE connectors
 One floppy drive interface supports up to two 2.88MB floppy

drives
 One ATX power supply connector
 One Wake-On-LAN connector
 One Wake-On-Ring connector
 CPU, chassis and second chassis fan connectors
 Three internal audio connectors (AUX-in, CD-in and TAD)

PCI Bus Master IDE Controller

 Two PCI IDE interfaces support up to four IDE devices
 Supports ATA/33, ATA/66 and ATA/100 hard drives
 PIO Mode 3 and Mode 4 Enhanced IDE (data transfer rate up

to 16.6MB/sec.)
 Bus mastering reduces CPU utilization during disk transfer
 Supports ATAPI CD-ROM, LS-120 and ZIP

29

English

English

IrDA Interface

The system board is equipped with an IrDA connector for wireless
connectivity between your computer and peripheral devices. It
supports peripheral devices that meet the HPSIR and ASKIR
standard.

USB Ports

The system board supports 4 USB por ts. Two onboard USB ports
are located at the ATX double deck ports of the board. The J19
connector on the system board allows you to connect the optional
3rd and 4th USB ports. These optional USB ports, which are
mounted on a card-edge bracket, will be provided as an option.
USB allows data exchange between your computer and a wide
range of simultaneously accessible external Plug and Play peripherals.

BIOS

 Award BIOS, Windows® 95/98/2000/ME Plug and Play compat-

ible
 Supports SCSI sequential boot-up
 Flash EPROM for easy BIOS upgrades
 Supports DMI 2.0 function
 2Mbit flash memory
 Vcore and CPU external bus clock selectable in the BIOS

Desktop Management Interface (DMI)

The system board comes with a DMI 2.0 built into the BIOS. The
DMI utility in the BIOS automatically records various information
about your system configuration and stores these information in the
DMI pool, which is a part of the system board's Plug and Play
BIOS. DMI, along with the appropriately networked software, is
designed to make inventory, maintenance and troubleshooting of
computer systems easier.

2.1.2 System Health Monitor Functions

The system board is capable of monitoring the following system
health conditions.

 Monitors CPU/system temperature and overheat alarm
 Monitors 12V/5V/3.3V/VCORE voltages and failure alarm

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 Monitors CPU/chassis fan speed and failure alarm
 Automatic chassis fan on/off control
 Read back capability that displays temperature, voltage and fan

speed

If you want a warning message to pop-up or a warning alarm to
sound when an abnormal condition occurs, you must install the VIA
Hardware Monitor utility. This utility is included in the CD that came
with the system board.

2.1.3 Intelligence

CPU Temperature Protection

The CPU Temperature Protection function has the capability of
monitoring the CPUs temperature during system boot-up. Once it
has detected that the CPUs temperature exceeded the CPU
temperature limit defined in the BIOS, the system will automatically
power-off after 5 warning beeps.

CPU Fan Protection

The CPU Fan Protection function has the capability of monitoring the
CPU fan during system boot-up and will automatically power-off the
system once it has detected that the CPU fan did not rotate. This
preventive measure has been added to protect the CPU from
damage and insure a safe computing environment.

Over Voltage

The Over Voltage function allows you to manually adjust to a higher
core voltage that is supplied to the CPU. Although this function is
supported, we do not recommend that you use a higher voltage
because unstable current may be supplied to the system board
causing damage.

CPU Overclocking

The CPU Overclocking function allows you to adjust the processors
bus clock. However, overclocking may result to the processors or
systems instability and are not guaranteed to provide better system
performance.