VIA Technologies VIA P4PB 266E User manual

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VIA Mainboard
User’s Manual
VIA P4PB 266E
Version 1.0 - June 20th, 2002
P/N 99-51-010711

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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.
No Warranty
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.

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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 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 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.

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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 95/98/98SE/2000/XP 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 equip-
ment 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 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. 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,STORAGETEMPERATUREABOVE600 C(1400F),ITMAY
DAMAGE THE EQUIPMENT.

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Box Contents
• 1 x VIA Mainboard
• 1 x User’s Manual
• 1 x Quick Installation Guide
• 1 x Floppy Ribbon Cable
• 1x ATA-33/66/100/133 IDE Ribbon Cable
• 1 x 2-Port USB 2.0/1.1 Module
• 1 x Audio Bracket
• 1 x Driver Utilities CD

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Contents
Chapter 1. Specifications ..................... 1-1
MainboardSpecifications .................................................. 1-2
Mainboard Layout ............................................................ 1-4
Connectors Guide ............................................................. 1-5
Chapter 2. Installation.......................... 2-1
CPUInstallation ................................................................ 2-2
CPU Installation ............................................................... 2-2
CPU Core Speed.............................................................. 2-3
CPU Fan Installation ........................................................ 2-3
MemoryInstallation ........................................................... 2-5
DDR Module Installation .................................................. 2-6
Power Supply ................................................................... 2-7
ATX 20-Pin Power Connector: ATXPWR....................... 2-7
ATX 12V Power Connector: AUX12V ........................... 2-7
Back Panel ....................................................................... 2-8
Mouse Connector: JMS1 .................................................. 2-8
Keyboard Connector: JKB1 ............................................. 2-8
USB Port Connectors....................................................... 2-9
Parallel Port Connector: LPT1 ......................................... 2-9
Serial Port Connectors: COM 1 & COM 2.................... 2-10
MIDI/Game Connector .................................................. 2-10
Audio Port Connectors ................................................... 2-10
RJ45 NIC Po(optional)................................................2-10
Connectors .................................................................... .2-11
Floppy Disk Drive Connector: FDD ................................ 2-11
IrDA Infrared Module Connector: SIR ...........................2-11
Hard Disk Connectors: IDE1 & IDE2 ........................... 2-12
CD-In Connector: CD_IN ............................................. 2-13
Aux Line-In Connector: AUX_IN ................................. 2-13

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Modem-In Connector: Modem_IN ................................ 2-13
Fan Power Connectors: CPU/SYS/PWR FAN ............. 2-14
Case Connectors: F_PANEL ......................................... 2-14
Audio Header Connector: Audio_Header ...................... 2-16
USB pin-header: USB3~6 .............................................. 2-17
Wake-On LAN Connector: WOL .................................. 2-17
Wake-On Ring Connector: WOR ................................... 2-18
1394 pin-header(optional) .............................................. 2-18
PC Smart Card Reader: SCR......................................... 2-19
Jumpers .......................................................................... 2-20
Clear CMOS Jumper: CLEAR_CMOS ......................... 2-20
Audio Codec Auto Detect Jumper: OB_CODEC ......... 2-21
CPU FSB Setting Jumper Switch: SW1........................2-21
Slots ............................................................................... 2-22
AGP (Accelerated Graphics Port) Slot .......................... 2-22
PCI Slots ........................................................................ 2-22
CNR (Communication Network Riser) .......................... 2-22
PCI Interrupt Request Routing ....................................... 2-23
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............................................. 3-11
Integrated Peripherals ...................................................... 3-13
Power Management Setup .............................................. 3-16
PNP/PCI Configurations ................................................. 3-21
PC Health Status............................................................. 3-23

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Frequency/Voltage Control .............................................. 3-24
Load Fail-Safe Defaults ................................................... 3-27
Load Optimized Defaults ................................................. 3-28
Set Supervisor/User Password ........................................ 3-29
Save & Exit Setup ........................................................... 3-31
ExitWithoutSaving ......................................................... 3-32
Chapter 4. Software Setup ................... 4-1
Utility Driver CD Content .................................................. 4-2
Getting Started .................................................................. 4-2
Running the Driver Utility CD .......................................... 4-2
CD Content ...................................................................... 4-2

1-1
Specifications
Specifications
1
The VIA P4PB 266E mainboard is based around
the VIA Apollo P4X266E chipset, which brings sup-
port for high-performance DDR SDRAM to the Intel®
Pentium® 4 platform. VIA’s advanced 266 MB/s 8-bit
V-Link controller brings optimal system efficiency by
effectively doubling bandwidth between the chipset’s
north and south bridges. Designed for the latest 478-
pin Pentium®4 processors, these ATX sized mainboards
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
Connectors Guide 1-5

1-2
Chapter 1
CPU
•Supports Intel®Pentium®4 Willamette/Northwood and Celeron®processors
in the 478 pin package
•Supports 1.5GHz, 1.6GHz, 1.7GHz, 1.8GHz, 1.9GHz, 2GHz, 2.2GHz and upwards
Chipset
•VIA Apollo P4X266E chipset (VT8753E & VT8235)
- Supports Intel®Pentium®4 processors with 400MHz (100MHz QDR) and
533MHz (133MHz QDR) CPU Front Side Bus (FSB)
- AGP v2.0 compliant with 4X (1.5V) transfer mode
- High Bandwidth 266 MB/s 8-bit V-Link Client controller
- Integrated Hardware Sound Blaster/Direct Sound AC’97 audio
- Ultra DMA 66/100/133 master mode PCI EIDE controller
- ACPI 1.0B and APM 1.2 compliant
Main Memory
•3 x 184-pin DDR DIMM sockets
• Supports up to 3GB of 2.5v DDR266 SDRAM (PC2100/PC1600)
Slots
• 1 x AGP (Accelerated Graphics Port) 4X slot(1.5V)
• 5 x PCI 2.2 32-bit PCI bus slots (supports 3.3v/5v PCI bus interface)
• 1 x CNR (Communication Network Riser) slot
Onboard IDE
• Integrated IDE controller provides IDE HDD/CD-ROM with PIO, Bus Master
and Ultra DMA 66/100/133 operation modes
• Can connect up to 2 channels for 4 IDE devices
Mainboard Specifications

1-3
Specifications
Onboard Peripherals
• 1 floppy port supports 2 x FDD
• 2 x serial ports (COM 1 + COM 2)
• 1 x SPP/EPP/ECP mode compliant parallel port
• 2 x USB 2.0 ports (plus 2 pin-headers for up to 4 USB 2.0 additional connections)
• 1 x IrDA connector for SIR/ASKIR/HPSIR
• 1 x MIDI/Game port
• 1 x Smart Card Reader connector
• 2 x IEEE 1394 connectors(optional)
• 1 x RJ45 NIC port(optional)
OnboardAudio
• VIA VT1616 6 channel AC’97 CODEC
• 1 x Audio header connector for addtional audio bracket
BIOS
• Award Plug & Play BIOS
• Desktop Management Interface (DMI) function which records your mainboard
specifications
Dimension
• ATX Form Factor
• 30.5cm x 22.5cm
Mounting
• 6 mounting holes

1-4
Chapter 1
Mainboard Layout
VIA P4PB 266E Mainboard
Top: Parallel port
Bottom: COM1/COM2
Socket478
266E
PCI Slot 1
Top: Mouse
Bottom: Keyboard
Top:RJ45
Bottom: USB ports
Top: Game port
Bottom:
Line-Out
Line-In
Mic
ATXPWR
AUX12V
PWRFAN
AGP Slot
PCI Slot 4
PCI Slot 3
PCI Slot 5
PCI Slot 2
BIOS SIR
CNR Slot
SCR
Modem_IN
AUX_IN
CD_IN
SYSFan
FDD
IDE 2
IDE 1
WOR
WOL
USB5/6USB3/4
1394-1 1394-2
F-PANEL
CPUFan
OB_Codec
Audio_Header
CLEAR_CMOS
(optional)
SW1
(optional)

1-5
Specifications
Connectors Guide
Connectors Function Reference
ATXPWR ATX 20-pin power connector See p. 2-7
AUX12V ATX 12V power connector See p. 2-7
JMS1 Mouse connector See p. 2-8
JKB1 Keyboard connector See p. 2-8
USB Port Connectors Connecting to USB devices See p. 2-9
LPT1 Parallel port connector See p. 2-9
COM 1 & COM 2 Serial port connectors See p. 2-10
MIDI/Game Connector Connecting to joystick or game pad See p. 2-10
Audio Port Connectors Line-Out/Line-In/Mic-In See p. 2-10
RJ45 NIC Port LAN port See p. 2-10
FDD Floppy disk drive connector See p. 2-11
SIR IrDA Infrared Module connector See p. 2-11
IDE 1 & IDE 2 Hard disk connectors See p. 2-12
CD_IN CD-In connector See p. 2-13
AUX_IN AUX Line-In connector See p. 2-13
Modem_IN Modem-In connector See p. 2-13
CPUFAN/SYSFAN/
PWRFAN
Fan Power connectors See p. 2-14
F_PANEL Case connectors See p. 2-14
Audio_Header Audio bracket connectors See p. 2-16
USB 3~6 USB pin-header connectors See p. 2-17
WOL Wake-On LAN connector See p. 2-17
WOR Wake-On Ring connector See p. 2-18
1394 Port Connectors 1394 pin-header See p. 2-18
SCR PC Smart Card Reader connector See p. 2-19
CLEAR_CMOS Clear CMOS jumper See p. 2-20
OB_CODEC Audio Codec Auto Detect jumper See p. 2-21
FSB Setting CPU FSB Setting See p. 2-21
AGP Slot Connecting to AGP card See p. 2-22
PCI Slots Connecting to PCI cards See p. 2-22
CNR Slot Connecting to CNR card See p. 2-22

Installation
2-1
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 contains the following sections:
CPU Installation 2-2
Memory Installation 2-5
Power Supply 2-7
Back Panel 2-8
Connectors 2-11
Jumpers 2-20
Slots 2-22
22
22
2

Chapter 2
2-2
CPU Installation
The VIA P4PB 266E mainboard supports the Intel®Pentium®4 Willamette/
Northwood and Celeron®processors in the 478 pin package (PGA478). When
installing the CPU, ensure the CPU has a large-size heatsink and a cooling
fan attached on the top to prevent overheating. If the heatsink and cooling
fan are not included with the CPU, contact your dealer to purchase and install
them before turning on the computer.
CPU Installation
Overheating will cause serious damage to the CPU
and system. Ensure the cooling fan and heatsink work
properly to protect the CPU from overheating.
WARNING!
1. Pull the lever sideways away
from the socket. Then raise
the lever up to a 90-degree
angle.
2. Look for the dot/cut edge. The
dot/cut edge should point to-
wards the lever pivot. The
CPU will only fit in the cor-
rect orientation.
3. Hold the CPU down firmly,
then close the lever shut to
complete the installation.

Installation
2-3
CPU Fan Installation
As processor technology pushes to faster speeds and higher performance, ther-
mal management becomes increasingly important. To dissipate heat, you MUST
attach the CPU cooling fan and heatsink on top of the CPU. Follow the in-
structions below to install the Heatsink/Fan:
CPU Core Speed
If CPU Clock = 100MHz
Core/Bus ratio = 18
then CPU core speed = CPU Clock x Core/Bus ratio
= 100MHz x 18
= 1.8GHz
2. Position the heatsink and fan onto the re-
tention mechanism.
1. Locate the CPU and its retention mecha-
nism on the mainboard.
Retention mechanism
Overclocking
This mainboard is designed to support overclocking. However,
please make sure your components are able to tolerate such abnor-
mal settings, before overclocking. Any attempt to operate beyond
product specifications is not recommended. We do not guarantee
the damages or risks caused by inadequate operation or operation
beyond product specifications.
WARNING!

Chapter 2
2-4
5. Connect the fan power cable from the mounted fan to the 3-pin fan power connector on the
mainboard.
3. Mount the fan on top of the heatsink. Press down the fan firmly until its four clips become
wedged in the holes of the retention mechanism.
4. Press the two levers down to secure the fan. Each lever can be pressed down in only ONE
direction.

Installation
2-5
The VIA P4PB 266E mainboard provides 3 sockets for 184-pin, 2.5V DDR
DIMM modules with 6 memory banks. To operate properly, at least one DIMM
module must be installed.
You can install PC1600/PC2100 DDR SDRAM modules on the DDR DIMM
sockets (DDR 1~3).
DDR (Double Data Rate) SDRAM is similar to conventional SDRAM, but
doubles the rate of transfer by transfering data twice per cycle. This is achieved
by transfering data on both the rising and falling edges of the clock. Conven-
tional SDRAM only uses the rising edge of the clock to transfer data. Therefore,
conventional SDRAM is called SDR (Single Data Rate) SDRAM. DDR
SDRAM uses 2.5 volts as opposed to 3.3 volts used in SDR SDRAM, and
requires 184-pin DIMM modules rather than 168-pin DIMM modules used by
SDR SDRAM. DDR SDRAM is also known as SDRAM-II, DDR DRAM and
DSDRAM (Double-Speed DRAM). Two types of DDR are available currently:
PC1600 & PC2100. PC1600 DDR SDRAM running at 100MHz will produce
about 1.6GB/s memory bandwidth. PC2100 running at 133MHz will produce
2.1GB/s memory bandwidth. High memory bandwidth makes DDR an ideal
solution for high performance PC, workstations and servers.
Memory Installation
DDR DIMM Sockets
(DDR 1~3)
Socket 478
266E

Chapter 2
2-6
DDR Module Installation
You can install either single sided or double sided 184-pin DDR DIMM mod-
ules into the DDR DIMM sockets, depending on your requirements. Differing
from SDR DIMM, DDR DIMM modules have only one notch on the center of
the module. The number of pins on either side of the breaks are also different.
The memory modules will only fit if placed in the correct orientation.
You can install DDR SDRAM modules in any of the following combinations:
Socket M emory M odule Total M em ory
Socket 1
(Bank 0 & Bank 1)
64M B, 128M B,
256M B, 512M B, 1GB
64M B~1GB
Socket 2
(Bank 2 & Bank 3)
64M B, 128M B,
256M B, 512M B, 1GB
64M B~1GB
Socket 3
(Bank 4 & Bank 5)
64M B, 128M B,
256M B, 512M B, 1GB
64M B~1GB
M aximum System M emory Supported 64M B~3GB
1. The DDR DIMM module has only one notch on the center.
2. Insert the DDR module vertically into the DDR DIMM socket. Make sure
the notch is correctly aligned.
3. The plastic clips at sides of the DIMM socket will automatically close shut.
Notch

Installation
2-7
Power Supply
The VIA P4PB 266E mainboard requires an ATX power supply for powering
the system. Before inserting the power supply connector, always make sure
that all components are installed properly to ensure that no damage will be
caused.
ATX 20-Pin Power Connector: ATXPWR
This connector is for the ATX power supply. To connect to the ATX power
supply, make sure the plugs of the power supply are inserted in the correct
orientation and the pins are properly aligned. Then, push down the plugs firmly
into the connector.
ATX 12V Power Connector: AUX12V
This 12V power connector is used to provide power to the CPU.
AUX12V
ATXPWR
13
24
20
10
111
PIN SIGNAL
11 3.3V
12 -12V
13 GND
14 PS_ON
15 GND
16 GND
17 GND
18 -5V
19 5V
20 5V
PIN SIGNAL
1 3.3V
2 3.3V
3 GND
4 5V
5 GND
6 5V
7 GND
8 PW_OK
9 5V_SB
10 12V
ATXPWR Pin Definition
PIN SIGNAL
1 GND
2 GND
3 12V
4 12V
AUX12V Pin
Socket 478
266E