Acorp 4PX400 User manual

The information presented in this publication has been
made carefully for reliability; however, no responsibility
is assumed for inaccuracies. Specifications are subject
to change without notice.
Trademarks and/or registered trademarks are the
properties of their respective owners.
User's Manual Version 1.0
4PX400
1
IBM, PC/AT, and PC/XT are trademarks of Interna-
tionalBusinessMachinesCorporation.Socket478is
a trademark of Intel CorporationAWARDis a
registered trademark of Phoenix Software Inc. MS-
DOS and WINDOWSNT are registered trademarks
ofMicrosoftCorporation.

Table of Contents
Introduction
1. MotherboardDescription
1.1 Introduction 1-1
1.2 Package Contents 1-1
1.3 Features 1-2
1.44PX400 Motherboard Layout 1-4
1.5 CPU Installation 1-6
1.6DDR SDRAM Installation 1-7
1.7 Connectors & Jumper Setting
1.7.1 Back Panel Connectors
1.7.1.1 PS/2 Mouse/Keyboard CONN. 1-8
1.7.1.2 USB Port ; LAN Connector(optional) 1-8
1.7.1.3 Serial Interface ports 1-9
1.7.1.4 Parallel Interface port 1-9
1.7.1.5 Joystick / Midi Connector 1-9
1.7.1.6 Audio Port Connectors 1-9
1.7.2ATX 4/20-pin Power Conn.:ATX1/ATX2 1-10
1.7.3 Floppy Disk Connector: FDD1 1-11
1.7.4 Hard Disk Connectors: IDE1/IDE2 1-11
1.7.5 Fan Connectors: FAN1~3 1-11
1.7.6 CD-Audio-IN Connectors: CDIN1/CDIN2 1-12
1.7.7 Wake-On-LAN/Modem Connectors:
WOL/WOM 1-13
1.7.8 Front Panel Connector: PANEL1 1-13
1.7.9 CMOS Function Selection: JBAT1 1-14
1.7.10 CPU Clock Frequency Setting: JP4 1-16
1.7.11 Host Clock Frequency : JP6 1-17
1.7.12 AC'97 CODEC Setting: JP5 1-17
1.7.13 USB Power Select: J1 1-18
1.7.14 IR Infrared Module: IR 1-18
1.7.15 Smart Panel Function (optional) 1-19
ii

Table of Contents
1.7.15.1 Second BIOS Connector(SP-J2) 1-20
1.7.15.2 Port 80 Debug Function(SP-J6) 1-20
1.7.15.3AUX LINE Connector(SP-J5) 1-21
1.7.15.4 Front COM2 Port Conn.(SP-J7) 1-21
1.7.15.5 Front USB2,3 Connector(SP-J8) 1-21
2. BIOS Setup
2.1 Main Menu 2-4
2.2 Standard CMOS Features 2-7
2.3Advanced BIOS Features 2-10
2.4Advanced Chipset Features 2-14
2.5 Integrated Peripherals 2-19
2.6 Power Management Setup 2-25
2.7 PnP/PCI Configurations 2-30
2.8 PC Health Status 2-33
2.9 Frequency/Voltage Control 2-35
2.10 Load Fail-SafeDefaults 2-36
2.11 Load OptimizedDefaults 2-37
2.12 Set Supervisor/user Password 2-38
2.13 Save & Exit Setup 2-40
2.14 Exit Without Saving 2-41
3.Driver Installation
3.1AutoRun Menu 3-1
3.2 Installing VIA 4 in 1Driver 3-2
3.3 InstallingAudioDriver 3-5
3.4 Installing USB2.0Driver 3-7
3.56-ChannelAudio SpeakerConfiguration 3-9
a.Appendix
iii

1-1
Chapter 1 Motherboard Description
The 4PX400 motherboard is designed for using Intel P4
Front Side Bus Frequency 400/533MHz CPU, which utilizes the
Socket-478 design and the memory size expandable to 3.0GB.
This motherboard uses the latest VIA P4X400 chipset,
appling 533MHz (DoubleData Rate) Front Side Bus frequency
and 333MHz memory interface delivers a clear upgrade path to
the future generation of P4 processors, PC-1600/PC-2100/
PC2700/PC3200(only 2 Dimms supported)DDR SDRAM. The
4PX400motherboardoffersUltra ATA100/133toprovidespeedier
HDDperformance.
It is ideal for multi-tasking and fully supporting MS-DOS,
Windows, Windows NT , Windows ME, Windows 2000, Novell,
OS/2, Windows95/98, Windows 98SE, Windows XP, UNIX,
Liunx, SCO UNIX etc. This manual also explains how to install
the mainboard for operation, and how to setup your CMOS con-
figuration with the BIOS setup program.
1
Chapter
HDD UDMA66/100 Cable.
FDDCable.
Flash Memory written for BIOS.
USB1/2 Cable (Optional).
Fully setupDriver CD.
This Manual.
1.1 Introduction
1.2 Package Contents

1-2
Chapter 1 Motherboard Description
1.3 Features
*1-Upgrade BIOS from the website on this manual cover to support higher
frequency processor.
CPUProcessor
Chipset
VIAP4X400North Bridge.
VIA VT8235 South Bridge.
PCI/AGP Speed
Supports 33MHz PCI Bus speed.
SupportsAGP 66 MHz/1.5Vfor 8/4/2X device.
DDR SDRAM Memory
Supports 64/128/256/512....MBDDR module socket.
Supports SynchronousDRAM(2.5V)
Supports a maximum memory size of 3GB withDDR
SDRAM.
BusSlots
Provide one AGP slot. (Only support 1.5V connector)
Six 32-bit PCI bus.
Universal Serial Bus
Supports two back Universal Serial Bus(USB)Ports and
four front Universal serial Bus(USB)Ports.
For USB Controller USB V1.1& V2.0


Support 400MHz and 533MHz System Interface speed
orhigher.
Single Socket 478 for Intel P4/CeleronTM up to 2.8GHz
or higher*1.
Support IntelNetburstTM Micro-architecture.




1-3
Chapter 1 Motherboard Description
1.3 Features
AC 97 2.2 compatible stereo audio CODEC.
18-bit stereo full-duplex CODEC with independent and
variable sampling rate.
Sound Blaster and Sound Blaster Pro emulation.



Flash Memory
Onboard LAN (Optional)
BIOS
IDE Built-in On Board
WOL & WOM (Wake On LAN & Modem)
PCI-Based AC 97 Digital Audio Processor
Support 2MB flash memory.
Support ESCD Function.
Fast Ethernet Controller 10/100 Mbps.
The mainboard BIOS provides Plug & Play BIOS
which detects the peripheral devices and expansion
cards of the board automatically.
BIOS support CD-ROM, SCSI, LAN BOOT, Tempera
ture sensor, LAN, Modem,Alarm Bus CLK setup with
BIOS.
The mainboard provides a Desktop Management In-
ter face(DMI) function which records your mainboard
specifications.
Supports four IDE devices.
Supports PIO Mode 5, Master Mode, high perfor-
mance hard disk drives.
Support UltraDMA33/66/100/133 Bus Master Mode.
Supports IDE interface with CD-ROM.
Supports high capacity hard disk drives.
Supports system power on from LAN & Modem ring up.









1-4
Chapter 1 Motherboard Description
GAME1
VIA
VIA
FAN2
1
SONY
IDE2 IDE1
IDE
USB2
1
1
Ir1 1
JBAT1
SP-J6
2
1
PCI3
PCI4
PCI5
PCI6
FDD1
FDD
I/O CHIP
SP-J5
61
2
5
1
J4
FAN3
1
T:Mouse
B:KB
PCI1
PCI2
PCI Slot
AGP SLOT
AGP Slot
CdIN2
CdIN1
1
ATX1
Power
FAN1
1
T:LAN (Optional)
B:USB1
Speak out
Line in
MIC in
COM1
COM2
Printer
ATX Power
Supply connector
ATX2
1
PANEL1
SP-J7
2
1
Jp5
1
J1
DDR2
DDR1
DDR
DDR3
Socket
478
SP-J2
2
1
WOM
WOL
SP-J8
1
JP4
2 4
1 3
JP2
2 4
1 3
JP-G1
2 4
1 3
JP6
2 4
1 3
1
Vj1 Vj5
1.Back Panel I/O Connectors (Mouse, Keyboard, USB1,COM1,
COM2, Printer, MIC in, Line in, Speaker out,Game stick,
LAN (Optional))
2.ATXPowerConnectors(ATX1/ATX2)
3. CPU Processor (Socket 478)
4.DDR SDRAM Sockets (DDR1/DDR2/DDR3)
10
1
10
7
22 22
19
15
2
22
6
14
11 17
16
5
4
9
8
3
12,13
1.4 4PX400 Layout
22
22
21
10
20
18

1-5
Chapter 1 Motherboard Description
5. AGP Slot
6. Floppy Connector
7. IDE Connectors (IDE1/IDE2)
8.North Bridge (VIAP4X400)
9. South Bridge (VIA VT8235)
10. Fan Connectors (FAN1/FAN2/FAN3)
11. CDAudio-InConnectors(CDIN1/CDIN2)
12. Wake-On-LANConnector (WOL)
13. Wake-On-Modem Connector (WOM)
14. Front Panel Connector (PANEL1)
15. Front USB Port Connectors (USB2/USB3[SP-J8])
16. CMOS Function Selection (JBAT1)
17. CPU Clock Frequency Setting (JP4)
18.AC’97 CODEC Selection (JP5)
19. Host Clock Frequency (JP6)
20. USB Power Select (J1)
21. IR Connector
22. Smart Panel Function (SP-J2/SP-J5/SP-J6/SP-J7/SP-J8
(optional)

1-6
Chapter 1 Motherboard Description
GAME1
VIA
VIA
FAN2
1
SONY
IDE2 IDE1
IDE
USB2
1
1
Ir1
1
JBAT1
SP-J6
2
1
PCI3
PCI4
PCI5
PCI6
FDD1
FDD
I/O CHIP
SP-J5
61
2
5
1
J4
FAN3
1
T:Mouse
B:KB
PCI1
PCI2
PCI Slot
AGP SLOT
AGP Slot
CdIN2
CdIN1
1
ATX1
Power
FAN1
1
T:LAN (Optional)
B:USB1
Speak out
Line in
MIC in
COM1
COM2
Printer
ATX Power
Supply connector
ATX2
1
PANEL1
SP-J7
2
1
Jp5
1
J1
DDR2
DDR1
DDR
DDR3
Socket
478
SP-J2
2
1
WOM
WOL
SP-J8
1
JP4
2 4
1 3
JP2
2 4
1 3
JP-G1
2 4
1 3
JP6
2 4
1 3
1
Vj1 Vj5
The motherboard operates with Socket 478 for Intel P4TM
processor. The CPU should always has a Heat Sink and cool-
ing fan attached to prevent overheating.
CPU Installation Procedures: Socket 478
1. Pull the lever sideways away from the socket then
raise the lever to a 90-degree angle.
2. Locate Pin 1 in the socket and look for the white dot or
cut edge in the CPU. Match Pin 1 with the white dot
or cut edge then insert the CPU.
3. Press the lever down to complete the installation.
4. Be sure that Pin 1 of Socket 478 is matching with
Pin 1 of CPU.
5. Be sure that all CPU pins are completely in soc-
ket before pressing down the socket lever.
mPGA478B
Socket 478
Notch
1.5 CPU Installation

1-7
Chapter 1 Motherboard Description
The motherboard supports a maximized 3GB memory. It pro-
vides three 184-pin unbufferedDDR sockets. It supports 64MB
to 1GBDDR memory module.
DDR DRAM Installation Procedures:
80pins 104 pins
Note: Be sure to turn off system power whenever to insert or re-
move a Memory Module. Without it, you will possibly damage the mod-
ule even the system.
1.6 DDR SDRAM Installation
TheDDR socket has a “Plastic Safety Tab” and theDDR memory
module has an asymmetrical notch”, therefore theDDR memory
module can only fit into the slot in one direction.
Push the tabs out. Insert the DDR memory modules into the
socket at a 90-degree angle then push down vertically to fit onto
place.
The Mounting Holes and plastic tabs should fit over the edge
and hold the DDR memory modules in place.



Bank Memory module
DDR 1/2/3 64MB, 128MB, 256MB, 512MB, 1GB
184 pin, 2.5VDDR SDRAM
Total System Memory (Max 3GB)
184Pin DIMM Socket

1-8
Chapter 1 Motherboard Description
1.7.1 Back Panel I/O Connectors
This motherboard provides the following back panel connectors:
1.7 Connectors & Jumpers Setting
The motherboard provides a OHCI(Universal Host Controller
Interface) & HCI (Enhance Host Controller Interface)Universal Se-
rial Bus Roots for attaching USB devices such as a keyboard,
mouse and other USB devices. Please notice that these 2 on
board USB ports could meet the USB2.0 transfer rate for 480MB/
sec.
The RJ-45 connector(Optional) is located on top of the USB
connectors.The connector allows the motherboard to connect to
a Local Area Network (LAN) through a net-work hub.Please no-
tice that on board LAN is an optional function.
PS/2 Keyboard
(6-pin Female) Serial Port
COM1 COM2 SPEAKER MIC
LINE IN
PS/2 Mouse
(Optional)
LAN
USB1
Parallel (Printer) Port
(25-pin Female) MIDI/(GAME) Port
(15-pin Female)
1234
RJ-45 10/100M LAN Port
(optional)
Pin Signal
1 +5V_SB
2 USBP0-(USBP1-)
3 USBP0+(USBP1+)
4 GND
USB1


(optional) (optional)
1.7.1.1 PS/2 Mouse / Keyboard CONN.
1.7.1.2 USB Port (Onboard) ; LAN Connectors (Optional)
The motherboard provides a standard PS/2 mouse / Keyboard
mini DIN connector for attaching a PS/2 mouse. You can plug a
PS/2 mouse / Keyboard directly into this connector.
(Optional)

1-9
Chapter 1 Motherboard Description
1.7.1.3 Serial Interface Ports: COM1/COM2
1.7.1.4 Parallel Interface Port
1.7.1.5 Joystick / Midi Connector
You can connect a joystick or game pad to this connector.
1.7.1.6 Audio Port Connectors
Speaker out is a connector for Speakers or Headphones. Line in is
used for external CD player, Tape player, or other audio devices.
Mic is a connector for the microphones.
1.7.2 ATX Power Connectors: ATX1/ATX2
COM1/COM2
This connector supports the power button on-board. Using the
ATX power supply, functions such as Modem Ring Wake-Up
and Soft Power Off are supported on this motherboard.
This power connector supports instant power-on functionality,
which means that the system will boot up instantly when the
power connector is inserted on the board.
Sometimes called a Centronics port, the parallel port is almost exclu-
sively used with printers. The parallel port on your system has a 25-
pin, DB 25connector.
The serial interface port is sometimes refered to as an RS-232 port or
an asynchronous communication port. Mice, printers, modems and
other peripheral devices can be connected to a serial port. The serial
port can also be used to connect your computer system. If you like to
transfer the contents of your hard disk to another system, it can be
accomplished by serial port.

1-10
Chapter 1 Motherboard Description
Important:
Before you switch on your power supply, please make sure:
Memory Module installing is OK.
Power supply setting is OK.
AGP card for 2X, 4X or 8X device is OK.
Pin ATX2 Signal Pin ATX2 Signal
1 3.3V 11 3.3V
2 3.3V 12 -12V
3 GND 13 GND
4 5V 14 PS-ON
5 GND 15 GND
6 5V 16 GND
7 GND 17 GND
8 PW-OK 18 -5V
9 5V_SB 19 5V
10 12V 20 5V
PinATX1 Signal PinATX1 Signal
1 GND 2 GND
3 +12V 4 +12V
2
31
4
11
10 20
1

1-11
Chapter 1 Motherboard Description
GAME1
VIA
VIA
FAN2
1
SONY
IDE2 IDE1
IDE
USB2
1
1
Ir1
1
JBAT1
SP-J6
2
1
PCI3
PCI4
PCI5
PCI6
FDD1
FDD
I/O CHIP
SP-J5
61
2
5
1
J4
FAN3
1
T:Mouse
B:KB
PCI1
PCI2
PCI Slot
AGP SLOT
AGP Slot
CdIN2
CdIN1
1
ATX1
Power
FAN1
1
T:LAN (Optional)
B:USB1
Speak out
Line in
MIC in
COM1
COM2
Printer
ATX Power
Supply connector
ATX2
1
PANEL1
SP-J7
2
1
Jp5
1
J1
DDR2
DDR1
DDR
DDR3
Socket
478
SP-J2
2
1
WOM
WOL
SP-J8
1
JP4
2 4
1 3
JP2
2 4
1 3
JP-G1
2 4
1 3
JP6
2 4
1 3
1
Vj1 Vj5
1.7.3 Floppy Disk Connector: FDD1
This connector supports the provided floppy drive ribbon cable.
After connecting the single end to the board, connect the two
plugs on the other end to the floppy drives.
1.7.4 Hard Disk Connectors: IDE1/IDE2
These connectors support the provided IDE hard disk ribbon
cable.After connecting the single end to the board, connect the
two plugs at the other end to your hard disk.
If you install two hard disks, you must configure the second
drive to Slave mode by setting its jumper settings. BIOS now
supports SCSI device or IDE CD-ROM boot up (see "HDD Se-
quence SCSI/IDE First" & "Boot Sequence" in the BIOS Fea-
tures Setup of the BIOS SOFTWARE) (Pin 20 is removed t o
prevent inserting in the wrong orientation when using ribbon
cables with pin 20 plugged).
1.7.5 Fan Connectors: FAN1~3
FAN 3
Connector
Pin Fan1~3 Definition
1 Signal
2 +12VDC
3 Ground
1
3
2
FAN1
Connector
FAN 2
Connector

1-12
Chapter 1 Motherboard Description
GAME1
VIA
VIA
FAN2
1
SONY
IDE2 IDE1
IDE
USB2
1
1
Ir1
1
JBAT1
SP-J6
2
1
PCI3
PCI4
PCI5
PCI6
FDD1
FDD
I/O CHIP
SP-J5
61
2
5
1
J4
FAN3
1
T:Mouse
B:KB
PCI1
PCI2
PCI Slot
AGP SLOT
AGP Slot
CdIN2
CdIN1
1
ATX1
Power
FAN1
1
T:LAN (Optional)
B:USB1
Speak out
Line in
MIC in
COM1
COM2
Printer
ATX Power
Supply connector
ATX2
1
PANEL1
SP-J7
2
1
Jp5
1
J1
DDR2
DDR1
DDR
DDR3
Socket
478
SP-J2
2
1
WOM
WOL
SP-J8
1
JP4
2 4
1 3
JP2
2 4
1 3
JP-G1
2 4
1 3
JP6
2 4
1 3
1
Vj1 Vj5
1.7.6 CD Audio-In Connectors: CDIN1/CDIN2
CDIN1/2 are the connectors for CD-Audio Input signal. Please
connect it to CD-ROM CD-Audio output connector.
CDIN1/
CDIN2
These connectors support cooling fans of 1Amp or less. Orien-
tate the fans so that the heatsink fins allow airflow to go across
the onboard heat sink(s) instead of the expansion slots. De-
pending on the fan manufacturer, the wiring and plug may be
different.The red wire should be positive, while the black should
be ground. Connect the fan’s plug to the board taking into con-
sideration the polarity of this connector.
Pin CDIN2 Definition
1 GND
2 CD-L
3 GND
4 CD-R
Pin CDIN1 Definition
1 CD-L
2 GND
3 GND
4 CD-R

1-13
Chapter 1 Motherboard Description
GAME1
VIA
VIA
FAN2
1
SONY
IDE2 IDE1
IDE
USB2
1
1
Ir1
1
JBAT1
SP-J6
2
1
PCI3
PCI4
PCI5
PCI6
FDD1
FDD
I/O CHIP
SP-J5
61
2
5
1
J4
FAN3
1
T:Mouse
B:KB
PCI1
PCI2
PCI Slot
AGP SLOT
AGP Slot
CdIN2
CdIN1
1
ATX1
Power
FAN1
1
T:LAN (Optional)
B:USB1
Speak out
Line in
MIC in
COM1
COM2
Printer
ATX Power
Supply connector
ATX2
1
PANEL1
SP-J7
2
1
Jp5
1
J1
DDR2
DDR1
DDR
DDR3
Socket
478
SP-J2
2
1
WOM
WOL
SP-J8
1
JP4
2 4
1 3
JP2
2 4
1 3
JP-G1
2 4
1 3
JP6
2 4
1 3
1
Vj1 Vj5
GAME1
VIA
VIA
FAN2
1
SONY
IDE2 IDE1
IDE
USB2
1
1
Ir1
1
JBAT1
SP-J6
2
1
PCI3
PCI4
PCI5
PCI6
FDD1
FDD
I/O CHIP
SP-J5
61
2
5
1
J4
FAN3
1
T:Mouse
B:KB
PCI1
PCI2
PCI Slot
AGP SLOT
AGP Slot
CdIN2
CdIN1
1
ATX1
Power
FAN1
1
T:LAN (Optional)
B:USB1
Speak out
Line in
MIC in
COM1
COM2
Printer
ATX Power
Supply connector
ATX2
1
PANEL1
SP-J7
2
1
Jp5
1
J1
DDR2
DDR1
DDR
DDR3
Socket
478
SP-J2
2
1
WOM
WOL
SP-J8
1
JP4
2 4
1 3
JP2
2 4
1 3
JP-G1
2 4
1 3
JP6
2 4
1 3
1
Vj1 Vj5
1.7.7 Wake-On-LAN / Modem Conn.: WOL/WOM
Pin Definition
1 5V_SB
2 Ground
3 Signal
3
1
1.7.8 Front Panel Connector: PANEL1
PANEL1
WOL / WOM
PANEL Connector
SPEAKER
PW_BN
2
1
RESET
HD_LED
PW_LED
++
++
20
19
SMILED
+

1-14
Chapter 1 Motherboard Description
ATX Power Switch (PW_BN)
Power LED Lead (PW_LED)
The system power LED lights when the system power
is on.
Speaker Connector (SPEAKER)
Hard Drive LED Connector (HD_LED)
Reset Switch Lead (RESET)
SMI_LED Lead (SMILED)
The system S3_LED lights when the system suspend is
on the S3 modle.
The system power is controlled by a momentary switch
connected to this lead. Pushing the button once will
switch the system ON.
Thespeaker(onboardoroffboard)provideserrorbeepcode
information duringthePowerSelf-Testwhenthecomputer
cannot use the video interface. The speaker is not con-
nected to the audio subsystem and does not receive out-
put from the audio subsystem.
The connector can be connected to a momentary SPST
type switch that is normally open. When the switch is
closed, the motherboard resets and runs the POST.
This connector supplies power to the cabinet IDE activity
LED. Read and write activity by devices connected to the
Primary or Secondary IDE connectors will cause the LED
to light up.

1-15
Chapter 1 Motherboard Description
GAME1
VIA
VIA
FAN2
1
SONY
IDE2 IDE1
IDE
USB2
1
1
Ir1
1
JBAT1
SP-J6
2
1
PCI3
PCI4
PCI5
PCI6
FDD1
FDD
I/O CHIP
SP-J5
61
2
5
1
J4
FAN3
1
T:Mouse
B:KB
PCI1
PCI2
PCI Slot
AGP SLOT
AGP Slot
CdIN2
CdIN1
1
ATX1
Power
FAN1
1
T:LAN (Optional)
B:USB1
Speak out
Line in
MIC in
COM1
COM2
Printer
ATX Power
Supply connector
ATX2
1
PANEL1
SP-J7
2
1
Jp5
1
J1
DDR2
DDR1
DDR
DDR3
Socket
478
SP-J2
2
1
WOM
WOL
SP-J8
1
JP4
2 4
1 3
JP2
2 4
1 3
JP-G1
2 4
1 3
JP6
2 4
1 3
1
Vj1 Vj5
1.7.9 CMOS Function Selection: JBAT1
A battery is used to retain the mainboard configuration in CMOS
RAM.
JBAT1
Pin JBAT1 Definition
1-2 Normal
(Default)
2-3 Clear CMOS
NOTE:
Please follow the procedure below to clear CMOS data.
 Remove the AC power line.
 JBAT1(2-3)Closed.
 Wait five seconds.
 JBAT1(1-2) Closed.
 AC Power on.
 Reset your desired password or clear CMOS data.

1-16
Chapter 1 Motherboard Description
GAME1
VIA
VIA
FAN2
1
SONY
IDE2 IDE1
IDE
USB2
1
1
Ir1
1
JBAT1
SP-J6
2
1
PCI3
PCI4
PCI5
PCI6
FDD1
FDD
I/O CHIP
SP-J5
61
2
5
1
J4
FAN3
1
T:Mouse
B:KB
PCI1
PCI2
PCI Slot
AGP SLOT
AGP Slot
CdIN2
CdIN1
1
ATX1
Power
FAN1
1
T:LAN (Optional)
B:USB1
Speak out
Line in
MIC in
COM1
COM2
Printer
ATX Power
Supply connector
ATX2
1
PANEL1
SP-J7
2
1
Jp5
1
J1
DDR2
DDR1
DDR
DDR3
Socket
478
SP-J2
2
1
WOM
WOL
SP-J8
1
JP4
2 4
1 3
JP2
2 4
1 3
JP-G1
2 4
1 3
JP6
2 4
1 3
1
Vj1 Vj5
1.7.10 CPU Clock Frequency Setting: JP4
NOTE:
Intel CPU doesn’t support overclock and over-Vcore, we don’t rec-
ommend users use these functions for possible CPU damaged.
JP4
Pin 1-2 3-4 CPU(MHz) PCI(MHz)
ON OFF ON 100 33.3
OFF OFF 133 33.3
OFF
Overclocking is operating a CPU/Processor beyond its speci-
fied frequency. JP4 jumper is used for the CPU Front Side Bus
Frequencies from 100MHz to 133MHz.
24
13

1-17
Chapter 1 Motherboard Description
GAME1
VIA
VIA
FAN2
1
SONY
IDE2 IDE1
IDE
USB2
1
1
Ir1 1
JBAT1
SP-J6
2
1
PCI3
PCI4
PCI5
PCI6
FDD1
FDD
I/O CHIP
SP-J5
61
2
5
1
J4
FAN3
1
T:Mouse
B:KB
PCI1
PCI2
PCI Slot
AGP SLOT
AGP Slot
CdIN2
CdIN1
1
ATX1
Power
FAN1
1
T:LAN (Optional)
B:USB1
Speak out
Line in
MIC in
COM1
COM2
Printer
ATX Power
Supply connector
ATX2
1
PANEL1
SP-J7
2
1
Jp5
1
J1
DDR2
DDR1
DDR
DDR3
Socket
478
SP-J2
2
1
WOM
WOL
SP-J8
1
JP4
2 4
1 3
JP2
2 4
1 3
JP-G1
2 4
1 3
JP6
2 4
1 3
1
Vj1 Vj5
1.7.12 AC’97 CODEC Selection: JP5
JP6
1.7.11 Host Clock Frequency: JP6
Pin JP5 Definition
On (Short)
on board sound Disabled
Off (Open)
on board code is using
JP5
1-2 3-4 Host(MHz) Default
ON ON 100 *
OFF ON 133