VIA Technologies P4XB-S User manual

i
VIA Mainboard
User’s Manual
VIA P4XB-S &
VIA P4XB-R
Version 1.3 - November 13, 2001

ii
Copyright
Copyright by VIA Technologies Inc. (“VIA”). No part of this manual may
be reproduced or transmitted in any form without express written
authorization from VIA.
Trademarks
All trademarks are the property of their respective holders.
Data protection
All data should be backed-up prior to the installation of any drive unit or
storage peripheral. VIA will not be responsible for any loss of data resulting
from the use, disuse or misuse of this or any other VIA product.
NoWarranty
VIA has made every effort to ensure the accuracy of the content of this
manual. However, it is possible that it may contain technical inaccuracies
or typographical or other errors. VIA will assume no liability for any
inaccuracy found in this publication, nor for damages, direct, indirect,
incidental, consequential or otherwise, that may result from such an
inaccuracy, including without limitation loss of data or profits.
VIA provides this manual “as is”, and does not issue a warranty of any
kind, express or implied, including without limitation implied warranties of
merchantability or fitness for a particular purpose.
The information provided in this manual is subject to change without
notice. VIA reserves the right to alter product designs, layouts or drivers
without notification.

iii
FCC-BRadioFrequencyInterferenceStatement
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 equip-
ment is operated in a commercial environment. This equipment generates, uses
and can radiate radio frequency energy and, if not installed and used in accor-
dance 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 respon-
sible 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.

iv
TRADEMARKS
All trademarks used in this manual are the property of their respective owners.
Intel and Pentium are registered trademarks of Intel Corporation.
PS/2 and OS/2 are registered trademarks of IBM Corporation.
Windows 95/98/2000 and Windows NT are registered trademarks of Microsoft.
Netware is a registered trademark of Novell.
Award is a registered trademark of Award Software Inc.
NOTE
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 and protect the
equipmentfrom overheating. DONOT COVERTHE 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 such a way that people cannot step on it. Do not
place anything over the power cord.
8. Always Unplug thePower Cord beforeinserting any add-oncard ormodule.
9. All cautions and warnings on the equipment should be noted.
10. Never pour any liquid into the opening. Doing so could 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 does not work well or does not work according to the
User’s Manual.
The equipment has dropped or damaged
The equipment has been visably damaged
12. DO NOT LEAVE THIS EQUIPMENT IN AN ENVIRONMENT
UNCONDITIONED,STORAGETEMPERATUREABOVE600C(1400F),IT
MAYDAMAGETHEEQUIPMENT.

v
Box Contents
•1 x VIA Mainboard
•1 x User’s manual
•1 x Floppy ribbon cable
•1 x ATA-66/100 Hard drive ribbon cable (2 are included
with the VIA P4XB-R)
•1 x 2 Port USB Module
•1 x Driver Utilities CD
•1 x User’s Manual for Promise FastTrak 100-Lite
RAID Controller (with VIA P4XB-R only)

vi
Contents
Chapter 1. Specifications....................1-1
Specifications ................................................................1-2
Layout............................................................................1-4
Components Guide ........................................................ 1-5
Chapter 2. Installation........................2-7
CPU Installation............................................................. 2-8
CPU Installation......................................................................... 2-8
CPU Core Speed....................................................................... 2-9
CPU Fan Installation ................................................................. 2-9
Memory Installation .................................................... 2-11
DDR Module Installation ......................................................... 2-13
Power Supply...............................................................2-13
ATX 20-Pin Power Connector: JWR1 .................................... 2-13
ATX 12V Power Connector: JPW1 ........................................ 2-13
Back Panel ...................................................................2-14
Mouse Connector: JKBMS1 ................................................... 2-15
Keyboard Connector: JKBMS1............................................... 2-15
USB Connectors...................................................................... 2-15
Parallel Port Connector: LPT1 ................................................ 2-15
Serial Port Connectors: COM A & COM B ........................... 2-17
Joystick (MIDI) Connector ..................................................... 2-17
Audio Port Connectors ............................................................ 2-17
Connectors ..................................................................2-17
Floppy Disk Drive Connector: FDD1 ...................................... 2-17
IrDA Infrared Module Connector: IR1 ................................... 2-17
Hard Disk Connectors: IDE1 & IDE2 .................................... 2-19
CD-In Connector: J3 ............................................................... 2-19
Aux Line-In Connector: J4 ...................................................... 2-19

vii
Modem-In Connector: J5 ......................................................... 2-19
Fan Power Connectors: CFAN2/SFAN1 ................................ 2-20
Case Connectors: JFP1/JFP2 .................................................. 2-21
Front Panel Audio Connector: JAUD...................................... 2-22
Wake On Ring Connector: JMDM1 ........................................ 2-23
Power Saving Switch Connector: JGS1................................... 2-23
USB Front Connector: USB3/USB4 ....................................... 2-24
Jumpers .......................................................................2-25
Clear CMOS Jumper: J7 ......................................................... 2-25
Onboard Audio Codec Jumper: JP1 ........................................ 2-26
Slots .............................................................................2-27
AGP (Accelerated Graphics Port) Slot ................................... 2-27
PCI Slots.................................................................................. 2-27
CNR (Communication Network Riser) ................................... 2-27
PCI Interrupt Request Routing ................................................ 2-28
Chapter 3. BIOS Setup .....................3-29
Entering Setup.............................................................3-30
Control Keys ................................................................3-30
Getting Help ................................................................3-31
The Main Menu............................................................3-32
Standard CMOS Features ...........................................3-34
Advanced BIOS Features.............................................3-36
Advanced Chipset Features.........................................3-39
Integrated Peripherals................................................3-44
Power Management Setup ..........................................3-50
PNP/PCI Configurations .............................................3-54
PC Health Status .........................................................3-56
Frequency/Voltage Control .........................................3-57
Load High Performance Defaults ...............................3-59

viii
Load Optimized Defaults.............................................3-60
Set Supervisor/User Password....................................3-61
Save & Exit Setup........................................................3-63
Exit Without Saving.....................................................3-64
Chapter 4. Driver Setup....................4-65
VIA Apollo P4X266 Chipset Drivers ...........................4-66
C-Media CMI8738 Audio Driver (P4XB-R only) ........4-71
Realtek ALC201A Audio Driver (P4XB-S only) ..........4-73

Specifications
1-1
Chapter 1. Specifications
Specifications
1
The VIA P4XB-R and P4XB-S mainboards are
based around the VIA Apollo P4X266 chipset, which
bringssupportfor high-performance DDR266SDRAM
to the Intel®Pentium® 4 platform. VIA’s advanced V-
Link controller brings optimal system efficiency by ef-
fectively doubling bandwidth between the chipset’s
north and south bridges. Designed for the latest 478-
pinPentium®4processors, these ATX sizedmainboards
are the perfect choice for Pentium 4 based high- per-
formance PCs, servers and workstations.
This chapter includes the following sections:
Mainboard Specifications 1-2
Mainboard Layout 1-4
Components Guide 1-5

Chapter 1
1-2
CPU
•Supports Intel®Pentium®4 processors in the 478 pin package.
•Supports1.5GHz,1.6GHz,1.7GHz,1.8GHz,1.9GHz,2GHzandupwards.
Chipset
•VIAApolloP4X266chipset(VT8753&VT8233)
- Supports Intel®Pentium®4 processors with 400MHz (100MHz QDR) CPU
Front Side Bus (FSB).
- AGP v2.0 compliant with 8x transfer mode.
- High Bandwidth V-Link Client controller.
- Integrated Faster Ethernet LPC.
- Integrated Hardware Sound Blaster/Direct Sound AC’97 audio.
- Ultra DMA 33/66/100 master mode PCI EIDE controller.
- ACPI 1.0B and PCI Bus Power Management 1.1 compliant.
Main Memory
•3 x 184-pin DDR DIMM slots.
•Supportsup to 3GBof DDR266SDRAM (PC2100/PC1600).
•Supports 2.5v DDR266 SDRAM.
Slots
•1 x AGP (Accelerated Graphics Port) 4X slot.
•5 x PCI 2.2 32-bit PCI bus slots (supports 3.3v/5v PCI bus interface).
•1 x CNR (Communication Network Riser) slot.
OnboardIDE
•Integrated IDE controller provides IDE HDD/CD-ROM with PIO, Bus Mas-
ter and Ultra DMA 33/66/100 operation modes.
•Can connect up to four IDE devices.
•IDE RAID 0, 1 supported by Promise PDC20265R controller (VIA P4XB-R
only).
Specifications