Asus P4U800-X User manual

Motherboard
P4U800-X
User Guide

ii
Checklist
Copyright © 2004 ASUSTeK COMPUTER INC. All Rights Reserved.
No part of this manual, including the products and software described in it, may be
reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any
language in any form or by any means, except documentation kept by the purchaser for
backup purposes, without the express written permission of ASUSTeK COMPUTER INC.
(“ASUS”).
Product warranty or service will not be extended if: (1) the product is repaired, modified or
altered, unless such repair, modification of alteration is authorized in writing by ASUS; or (2)
the serial number of the product is defaced or missing.
ASUS PROVIDES THIS MANUAL “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES
OR CONDITIONS OF MERCHANTABILITY OR FITNESS FORA PARTICULAR PURPOSE.
IN NO EVENT SHALLASUS, ITS DIRECTORS, OFFICERS, EMPLOYEES OR AGENTS BE
LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
(INCLUDING DAMAGES FOR LOSS OF PROFITS, LOSS OF BUSINESS, LOSS OF USE
OR DATA, INTERRUPTION OF BUSINESS AND THE LIKE), EVEN IF ASUS HAS BEEN
ADVISED OF THE POSSIBILITY OF SUCH DAMAGES ARISING FROM ANY DEFECT OR
ERROR IN THIS MANUAL OR PRODUCT.
SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUALARE FURNISHED
FOR INFORMATIONAL USE ONLY,AND ARE SUBJECT TO CHANGE AT ANY TIME
WITHOUT NOTICE,AND SHOULD NOT BE CONSTRUEDAS ACOMMITMENT BYASUS.
ASUS ASSUMES NO RESPONSIBILITY OR LIABILITY FOR ANY ERRORS OR
INACCURACIES THAT MAY APPEAR IN THIS MANUAL, INCLUDING THE PRODUCTS
AND SOFTWARE DESCRIBED IN IT.
Products and corporate names appearing in this manual may or may not be registered
trademarks or copyrights of their respective companies, and are used only for identification or
explanation and to the owners’ benefit, without intent to infringe.
E1713
Revised Edition V2
July 2004

iii
Features
Contents
Notices ............................................................................................v
Safety information .......................................................................... vi
About this guide............................................................................. vii
Conventions used in this guide ............................................ vii
Where to find more information ............................................ vii
P4U800-X specification summary ................................................ viii
Chapter 1: Product introduction
1.1 Welcome! ........................................................................... 1-2
1.2 Package contents............................................................... 1-2
1.3 Special features.................................................................. 1-2
1.4 Before you proceed ............................................................ 1-4
1.5 Motherboard overview........................................................ 1-5
1.5.1 Motherboard layout ................................................ 1-5
1.5.2 Placement direction ............................................... 1-6
1.5.3 Screw holes ........................................................... 1-6
1.6 Central Processing Unit (CPU)........................................... 1-7
1.6.1 Overview ................................................................ 1-7
1.6.2 Installing the CPU .................................................. 1-8
1.7 System memory ................................................................. 1-9
1.7.1 DIMM sockets location........................................... 1-9
1.7.2 Memory configurations .......................................... 1-9
1.7.3 Installing a DIMM ................................................. 1-10
1.8 Expansion slots .................................................................1-11
1.8.1 Standard interrupt assignments ............................1-11
1.8.2 IRQ assignments for this motherboard .................1-11
1.8.3 PCI slots .............................................................. 1-12
1.8.4 AGP slot............................................................... 1-12
1.9 Jumpers............................................................................ 1-13
1.10 Connectors ....................................................................... 1-15
1.10.1 Rear panel connectors......................................... 1-15
1.10.2 Internal connectors .............................................. 1-16

iv
Safeguards
Contents
Chapter 2: BIOS Information
2.1 Managing and updating your BIOS .................................... 2-2
2.1.1 Creating a bootable floppy disk ............................. 2-2
2.1.2 Updating the BIOS with EZ Flash feature .............. 2-3
2.1.3 Recovering the BIOS with CrashFree BIOS .......... 2-4
2.1.4 ASUS Update ........................................................ 2-5
2.2 BIOS Setup program .......................................................... 2-7
2.2.1 BIOS menu screen ................................................ 2-8
2.2.2 Menu bar................................................................ 2-8
2.2.3 Legend bar............................................................. 2-9
2.2.4 General help .......................................................... 2-9
2.2.5 Sub-menu .............................................................. 2-9
2.2.6 Pop-up window ...................................................... 2-9
2.3 Main menu........................................................................ 2-10
Primary and Secondary Master/Slave.............................. 2-12
2.4 Advanced menu ............................................................... 2-15
2.4.1 Frequency/Voltage Control .................................. 2-16
2.4.2 Chip Configuration ............................................... 2-17
2.4.3 I/O Device Configuration...................................... 2-19
2.4.4 PCI Configuration ................................................ 2-20
2.5 Power menu ..................................................................... 2-22
2.5.1 Power Up Control ................................................ 2-23
2.5.2 Hardware Monitor ................................................ 2-25
2.6 Boot menu ........................................................................ 2-26
2.7 Exit menu ......................................................................... 2-28
Chapter 3: Software support
3.1 Install an operating system................................................. 3-2
3.2 Support CD information...................................................... 3-2
3.2.1 Running the support CD ........................................ 3-2
3.2.2 Drivers menu ......................................................... 3-3
3.2.3 Utilities menu ......................................................... 3-3
3.2.4 ASUS Contact Information..................................... 3-4

v
Notices
Federal Communications Commission Statement
This device complies with Part 15 of the FCC Rules. Operation is subject to
the following two conditions:
•This device may not cause harmful interference, and
•This device must accept any interference received including interference
that may cause undesired operation.
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
in a residential installation. This equipment generates, uses and can radiate
radio frequency energy and, if not installed and used in accordance with
manufacturer’s instructions, 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 receiver.
•Connect the equipment to 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.
Canadian Department of Communications Statement
This digital apparatus does not exceed the Class B limits for radio noise
emissions from digital apparatus set out in the Radio Interference
Regulations of the Canadian Department of Communications.
This class B digital apparatus complies with Canadian ICES-003.
The use of shielded cables for connection of the monitor to the
graphics card is required to assure compliance with FCC regulations.
Changes or modifications to this unit not expressly approved by the
party responsible for compliance could void the user’s authority to
operate this equipment.

vi
Safety information
Electrical safety
•To prevent electrical shock hazard, disconnect the power cable from
the electrical outlet before relocating the system.
•When adding or removing devices to or from the system, ensure that
the power cables for the devices are unplugged before the signal
cables are connected. If possible, disconnect all power cables from the
existing system before you add a device.
•Before connecting or removing signal cables from the motherboard,
ensure that all power cables are unplugged.
•Seek professional assistance before using an adpater or extension
cord. These devices could interrupt the grounding circuit.
•Make sure that your power supply is set to the correct voltage in your
area. If you are not sure about the voltage of the electrical outlet you
are using, contact your local power company.
•If the power supply is broken, do not try to fix it by yourself. Contact a
qualified service technician or your retailer.
Operation safety
•Before installing the motherboard and adding devices on it, carefully
read all the manuals that came with the package.
•Before using the product, make sure all cables are correctly connected
and the power cables are not damaged. If you detect any damage,
contact your dealer immediately.
•To avoid short circuits, keep paper clips, screws, and staples away from
connectors, slots, sockets and circuitry.
•Avoid dust, humidity, and temperature extremes. Do not place the
product in any area where it may become wet.
•Place the product on a stable surface.
•If you encounter technical problems with the product, contact a
qualified service technician or your retailer.

vii
About this guide
Conventions used in this guide
To make sure that you perform certain tasks properly, take note of the
following symbols used throughout this manual.
Where to find more information
Refer to the following sources for additional information and for product
and software updates.
1. ASUS Websites
The ASUS websites worldwide provide updated information onASUS
hardware and software products. The ASUS websites are listed in the
ASUS Contact Information on the inside front cover.
2. Optional Documentation
Your product package may include optional documentation, such as
warranty flyers, that may have been added by your dealer. These
documents are not part of the standard package.
WARNING: Information to prevent injury to yourself when trying
to complete a task.
CAUTION: Information to prevent damage to the components
when trying to complete a task.
IMPORTANT: Information that you MUST follow to complete a
task.
NOTE: Tips and additional information to aid in completing a task.

viii
P4U800-X specification summary
(continued on the next page)
CPU
Chipset
Front Side Bus (FSB)
Memory
Expansion slots
Storage
Audio
LAN
Special features
Overclocking
Rear panel I/O
Socket 478 for Intel
®
Pentium
®
4 / Celeron
with speeds up to 3.4GHz
Supports Intel
®
Hyper-Threading technology
New power design supports next generation Intel Prescott CPU
ULI M1683
ULI M1563
800/533/400 MHz
3 x 184-pin DDR DIMM sockets for up to 3GB memory
Supports PC3200/PC2700/PC2100 unbuffered non-ECC
DDR DIMMs
1 x AGP 8X/4X
5 x PCI
2 x UltraDMA 133/100/66/33 connectors
ADI AD1888 SoundMAX 6-channel audio CODEC
support S/PDIF out interface
ULI M1563 integrated 10/100 Mbps MAC
with VIA VT6103 PHY
ASUS EZ Flash
ASUS C.P.R. (CPU Parameter Recall)
ASUS CrashFree BIOS
ASUS JumperFree
SFS (Stepless Frequency Selection) at 1Mhz increment
Adjustable FSB/DDR ratio
ASUS C.P.R. (CPU Parameter Recall)
1 x Parallel port
1 x Serial port
1 x PS/2 keyboard port
1 x PS/2 mouse port
4 x USB 2.0 ports
1 x RJ-45 port
Line In/Line Out/Microphone ports
1 x S/PDIF out port

ix
P4U800-X specification summary
* Specifications are subject to change without notice.
Internal I/O
BIOS features
Industry standard
Manageability
Power Requirement
Form Factor
Support CD contents
1 x USB 2.0 connector for 2 additional USB ports
CPU/Chassis fan connectors
20-pin/4-pin ATX 12V power connectors
CD/AUX/MODEM connectors
Game/MIDI port connector
20-pin panel connector
Front panel audio connector
2Mb Flash ROM, AMI BIOS, ACPI, PnP, DMI2.0, WfM 2.0,
SM BIOS 2.3, DMI 2.0, ASUS CrashFree BIOS, ASUS EZ
Flash
PCI 2.2, USB 2.0/1.1
DMI 2.0, WOL/WOR by PME, SMBus
ATX power supply (with 4-pin 12V plug)
ATX form factor: 12 in x 8.6 in (30.5 cm x 20.8 cm)
Device drivers
ASUS PC Probe
ASUS LiveUpdate
Trend Micro™ PC-cillin 2002 anti-virus software

x

Chapter 1
This chapter describes the features of the
P4U800-X motherboard. It includes brief
descriptions of the motherboard components,
and illustrations of the layout, jumper settings,
and connectors.
Product introduction

1-2 Chapter 1: Product introduction
1.1Welcome!
Thank you for buying the ASUS
®
P4U800-X motherboard!
The ASUS
P4U800-X motherboard, based on the ULI
®
M1683 chipset supporting
800 FSB that delivers a host of new features and latest technologies making it
another standout in the long line of ASUS quality motherboards!
Before you start installing the motherboard, and hardware devices on it, check the
items in your package with the list below.
1.2Package contents
Check your P4U800-X package for the following items.
If any of the above items is damaged or missing, contact your retailer.
1.3 Special features
Latest processor technology
The motherboard supports the latest Intel
®
Pentium
®
4 Processor via a 478-pin surface
mount ZIF socket. The Pentium 4 processor with 512KB L2 cache on 0.13 micron
processor includes a 800/533/400 MHz system bus, Intel
®
Hyper-Threading
Technology and the FMB2 power design that allows up to 3.2+ GHz core
frequencies for up to 6.4GB/s data transfer rates. See page 1-7.
DDR400 (PC3200) support
DDR400 (PC3200), the latest and fastest DDR memory standard, supports
bandwidth of up to 3.2 GB/s to provide enhanced system performance. See 1-9.
ASUS P4U800-X motherboard
ASUS motherboard support CD
1 x UltraDMA 100/66 cable
1 x Floppy disk cable
I/O shield
Bag of extra jumper caps
User Guide

ASUS P4U800-X motherboard 1-3
CrashFree BIOS
This feature allows you to restore the original BIOS data from a floppy disk in case
the BIOS codes and data are corrupted. This protection eliminates the need to buy
a replacement ROM chip.
AGP 8X support
AGP 8X (AGP 3.0) is the next generation VGA interface specification that enables
enhanced graphics performance with high bandwidth speeds up to 2.12 GB/s. With
a bus of 533Mhz, AGP 8X is twice as fast as AGP 4X.
USB 2.0 technology
The motherboard implements the new Universal Serial Bus (USB) 2.0
specification, extending the connection speed from 12 Mbps on USB 1.1 to a fast
480 Mbps on USB 2.0. See page 1-15.
10/100 Mbps LAN support
Easy connectivity to your network or broadband connection with the onboard LAN
port. See page 3-3.
6-channel digital audio
The ADI AD1888 AC’97 audio CODEC onboard provides 6-channel audio playback
for 5.1 surround sound using digital audio devices via a Sony/Philips Digital
Interface (S/PDIF) jack located at the rear panel I/O. See page 3-3.

1-4 Chapter 1: Product introduction
1.4 Before you proceed
Take note of the following precautions before you install motherboard components
or change any motherboard settings.
1. Unplug the power cord from the wall socket before touching any
component.
2. Use a grounded wrist strap or touch a safely grounded object or to a metal
object, such as the power supply case, before handling components to
avoid damaging them due to static electricity.
3. Hold components by the edges to avoid touching the ICs on them.
4. Whenever you uninstall any component, place it on a grounded antistatic
pad or in the bag that came with the component.
5. Before you install or remove any component, ensure that the ATX
power supply is switched off or the power cord is detached from the
power supply. Failure to do so may cause severe damage to the
motherboard, peripherals, and/or components.
Onboard LED
The motherboard comes with a stand-by power LED. When lit, the green LED
indicates that the system is ON, in sleep mode, or in soft-off mode, a reminder that
you should shut down the system and unplug the power cable before removing or
plugging in any motherboard component. The illustration below shows the location
of the onboard LED.
P4U800-X
®
P4U800-X Onboard LED
SB_PWR
ON
Standby
Power
OFF
Powered
Off

ASUS P4U800-X motherboard 1-5
1.5 Motherboard overview
1.5.1 Motherboard layout
PCI1
PANEL
P4U800-X
®
AUX
CD
Super
I/O
2Mbit
Firmware
Hub
PS/2KBMS
T: Mouse
B: Keyboard
Below:Mic In
Center:Line Out
Top:Line In
Accelerated Graphics Port (AGP1)
CPU_FAN1
FP_AUDIO
AD1888
USB2.0
T: USB3
B: USB4
Top:
RJ-45
GAME1
Socket 478
ATX12V1
CHASSIS1
DDR DIMM2 (64 bit,184-pin module)
CLRTC
PRI_IDE1 SEC_IDE1
ATXPWR1
DDR DIMM1 (64 bit,184-pin module)
DDR DIMM3 (64 bit,184-pin module)
CHA_FAN1
ULi
M1563
ULi
M1683
PCI2
PCI3
PCI4
PCI5
USB56
PARALLEL PORT
COM1
USB12
SPDIF_O
USBPW34 USBPW12
FLOPPY1
CR2032 3V
Lithium Cell
CMOS Power
SB_PWR
USBPW56

1-6 Chapter 1: Product introduction
Do not overtighten the screws! Doing so may damage the motherboard.
1.5.2 Placement direction
When installing the motherboard, make sure that you place it into the chassis in
the correct orientation. The edge with external ports goes to the rear part of the
chassis as indicated in the image below.
1.5.3 Screw holes
Place seven (7) screws into the holes indicated by circles to secure the
motherboard to the chassis.
Place this side towards
the rear of the chassis

ASUS P4U800-X motherboard 1-7
1.6 Central Processing Unit (CPU)
1.6.1 Overview
The Intel
®
Pentium
®
4 processors has a gold triangular mark on one corner. This
mark indicates the processor Pin 1 that should match a specific corner of the CPU
socket.
Incorrect installation of the CPU into the socket may bend the pins and severely
damage the CPU!
Notes on Intel
®
Hyper-Threading Technology
To use the Hyper-Threading Technology on this motherboard:
1. Buy an Intel
®
Pentium
®
4 CPU that supports Hyper-Threading Technology.
Install the CPU.
2. Power up the system and enter the BIOS setup (See Chapter 2: BIOS
Information). Under the Advanced Menu, make sure that the item
Hyper-Threading Technology is set to Enabled. The item appears only if you
installed a CPU that supports Hyper-Threading Technology.
3. Reboot the computer.
1. This motherboard supports Intel
®
Pentium
®
4 CPUs with Hyper-Threading
Technology.
2. Make sure to enable the Hyper-Threading Technology item in the BIOS
before installing a supported operating system.
3. To verify the Hyper-Threading feature, go to the Windows OS System
Properties -> Hardware -> Device Manager -> Processors. The list
should display two existing processors.
4. Hyper-Threading Technology is supported under Windows
®
XP™ and later
versions only.
5. It is recommended that you install Windows
®
XP™ Service Pack 1.
6. For more information on Hyper-Threading Technology, visit
www.intel.com/info/hyperthreading.
P4U800-X
®
P4U800-X Socket 478
Gold Arrow

1-8 Chapter 1: Product introduction
1.6.2 Installing the CPU
Follow these steps to install a CPU.
1. Locate the 478-pin ZIF socket on the motherboard.
2. Unlock the socket by pressing the
lever sideways, then lift it up to a 90°-
100° angle.
Make sure that the socket lever is
lifted up to 90°-100° angle,
otherwise the CPU does not fit in
completely.
3. Position the CPU above the socket
such that its marked corner matches
the base of the socket lever.
4. Carefully insert the CPU into the
socket until it fits in place.
The CPU fits only in one correct
orientation. DO NOT force the
CPU into the socket to prevent
bending the pins and damaging
the CPU!
5. When the CPU is in place, push down
the socket lever to secure the CPU.
The lever clicks on the side tab to
indicate that it is locked.
6. Install a CPU heatsink and fan
following the instructions that came
with the heatsink package.
7. Connect the CPU fan cable to the
CPU fan connector on the
motherboard.
Socket Lever
90 -100
Gold Mark

ASUS P4U800-X motherboard 1-9
1.7System memory
1.7.1 DIMM sockets location
The following figure illustrates the location of the DDR DIMM sockets.
1.7.2 Memory configurations
You may install 64MB, 128MB, 256MB, 512MB, and 1GB DDR DIMMs into the
DIMM sockets using the memory configurations in this section.
Important notes
1. Make sure to unplug the power supply before adding or removing DIMMs or
other system components. Failure to do so may cause severe damage to
both the motherboard and the components.
2. When installing long AGP cards, it is recommended to install the memory
modules first. Long AGP cards, when installed, may interfere with the
memory sockets.
1. For optimum compatibility, it is recommended that you obtain memory
modules from the same vendor. See the DDR400 Qualified Vendor List
(QVL) on page 1-10.
2. Always install DIMMs with the same CAS Latency.
3. Double-sided DDR DIMMs with x16 (data bus=16bit) memory chips are not
supported due to chipset limitation.
P4U800-X
®
P4U800-X 184-Pin DDR DIMM Sockets
80 Pins 104 Pins
DIMM1
DIMM2 DIMM3

1-10 Chapter 1: Product introduction
•Use of three DDR400 DIMM modules on all slots is not recommended. The
operating memory frequency will work only at 266MHz when you install
DDR400 DIMM modules to all slots.
•Obtain DDR 400 DIMMs only from ASUS qualified vendors. Visit the ASUS
website (www.asus.com) for the latest QVL.
Table 1 DDR400 Qualified Vendor List (QVL)
DIMM support
Size Vendor Model CL Brand Side(s) Component A* B*
256MB KINGSTON KVR400X64C3A/256 N/A Hynix SS HY5DU56822BT-D43 • •
512MB KINGSTON KVR400X64C3A/512 N/A Hynix DS HY5DU56822BT-D43 • •
256MB KINGSTON KVR400X64C3A/256 N/A Infineon SS HYB25D256800BT-5B • •
512MB KINGSTON KVR400X64C3A/512 N/A Infineon DS HYB25D256809BT-5B •
256MB KINGSTON KVR400X64C3A/256 N/A KINGSTON SS D3208DL2T-5 • •
512MB KINGSTON KVR400X64C3A/512 N/A KINGSTON DS D328DIB-50 • •
512MB KINGSTON KHX3200A/512 N/A N/A DS Heat-Sink Package •
256MB SAMSUNG M368L3223ETM-CCC N/A SAMSUNG SS K4H560838E-TCCC •
512MB SAMSUNG M368L6423ETM-CCC 3SAMSUNG DS K4H560838E-TCCC •
256MB SAMSUNG M368L3223FTN-CCC 3SAMSUNG SS K4H560838F-TCCC • •
256MB Hynix HYMD232646B8J-D43 AA 3Hynix SS HY5DU56822BT-D43 • •
512MB Hynix HYMD264646B8J-D43 AA N/A Hynix DS HY5DU56822BT-D43 • •
256MB MICRON MT8VDDT3264AG-40BCB N/A MICRON SS MT46V32M8TG-5BC • •
512MB MICRON MT16VDDT6464AG-40BCB N/A MICRON DS MT46V32M8TG-5BC • •
256MB Infineon HYS64D32300GU-5-B 3Infineon SS HYB25D256800BT-5B • •
512MB Infineon HYS64D64320GU-5-B 3Infineon DS HYB25D256800BT-5B • •
256MB Infineon HYS64D32300HU-5-C 3Infineon SS HYB25D256800CE-5C •
256MB CORSAIR CMX256A-3200C2PT 2Winbond SS W942508BH-5 •
512MB CORSAIR CMX512-3200C2 2Winbond DS Heat-Sink Package •
512MB CORSAIR VS512MB400 2.5 VALUE seLecT DS VS32M8-5 • •
1.7.3 Installing a DIMM
Follow these steps to install a DIMM.
1. Unlock a DIMM socket by pressing the
retaining clips outward.
2. Align a DIMM on the socket such that the
notch on the DIMM matches the break on
the socket.
3. Firmly insert the DIMM into the socket
until the retaining clips snap back in place
and the DIMM is properly seated.
A DDR DIMM is keyed with a notch so that it fits in only one direction. DO NOT
force a DIMM into a socket to avoid damaging the DIMM.
Unlocked
DDR DIMM
Side(s): SS - Single Sided DS - Double Sided
CL - CAS Latency
DIMM Support:
A - supports one module inserted into either slot, in a Single-channel memory configuration.
B- supports on pair of modules inserted into two slots as a Single-channel memory configuration.