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 FOR A PARTICULAR PURPOSE.
IN NO EVENT SHALL ASUS, 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 MANUAL ARE FURNISHED
FOR INFORMATIONAL USE ONLY, AND ARE SUBJECT TO CHANGE AT ANY TIME
WITHOUT NOTICE, AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY ASUS.
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.
This device complies with FCC Rules Part 15. 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.
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.
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.
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 product and adding devices on it, carefully read all
the documentation 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
This user guide contains the information you need when installing the
ASUS PU-DLS/PU-DL motherboard.
How this guide is organized
This manual contains the following parts:
•Chapter 1: Product introduction
This chapter describes the features of the PU-DLS/PU-DL
motherboard. It includes brief descriptions of the special attributes of
the motherboard and the new technology it supports.
•Chapter 2: Hardware information
This chapter lists the hardware setup procedures that you have to
perform when installing system components. It includes description of
the switches, jumpers, and connectors on the motherboard.
•Chapter 3: Powering up
This chapter describes the power up sequence and gives information
on the BIOS beep codes.
•Chapter 4: BIOS setup
This chapter tells how to change system settings through the BIOS
Setup menus. Detailed descriptions of the BIOS parameters are also
provided.
•Chapter 5: Driver Installation
This chapter tells how to install SCSI (for PU-DLS model only), LAN,
and audio drivers for various operating systems.
viii
Conventions used in this guide
To make sure that you perform certain tasks properly, take note of the
following symbols used throughout this manual.
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.
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 on ASUS
hardware and software products. The ASUS websites are listed in the
ASUS Contact Information on page x.
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.
ix
ASUS contact information
ASUSTeK COMPUTER INC. (Asia-Pacific)
Address:150 Li-Te Road, Peitou, Taipei, Taiwan 112
General Tel:+886-2-2894-3447
General Fax:+886-2-2894-3449
General Email:info@asus.com.tw
Technical Support
MB/Others (Tel):+886-2-2890-7121 (English)
Notebook (Tel):+886-2-2890-7122 (English)
Desktop/Server (Tel):+886-2-2890-7123 (English)
Support Fax:+886-2-2890-7698
Web Site:www.asus.com.tw
ASUS COMPUTER INTERNATIONAL (America)
Address:44370 Nobel Drive, Fremont, CA 94538, USA
General Fax:+1-510-608-4555
General Email:tmd1@asus.com
Technical Support
Support Fax:+1-510-608-4555
General Support:+1-510-739-3777
Web Site:www.asus.com
Support Email:tsd@asus.com
ASUS COMPUTER GmbH (Germany and Austria)
Address:Harkortstr. 25, 40880 Ratingen, BRD, Germany
General Email:sales@asuscom.de (for marketing requests only)
General Fax:+49-2102-9599-31
Technical Support
Support Hotlines:Components:+49-2102-9599-0
Notebook PC:+49-2102-9599-10
Support (Email):www.asuscom.de/kontakt (for online support)
Web Site:www.asuscom.de
Support Fax:+49-2102-9599-11
x
PU-DLS/PU-DL specifications summary
The Onboard SCSI controller, internal SCSI connectors, and SCSI
LED connector are available only on PU-DLS models.
CPU
Chipsets
Front Side Bus (FSB)
Memory
Onboard LAN
Onboard SCSI
Expansion slots
Rear panel I/O
®
Support for dual Intel
with speeds up to 3.06 GHz
On-die 512KB L2 cache
Adaptec® AIC-7902W Ultra-320 SCSI controller
4 x PCI 64-bit/100MHz 3V (PCI-X1 to PCI-X4)
2 x PCI 32-bit/33MHz 5V (PCI1, PCI2)
1 x Parallel port
2 x Serial ports
1 x VGA port
1 x PS/2 keyboard port
1 x PS/2 mouse port
2 x USB 1.1 ports
2 x RJ-45 ports (with LED)
Xeon™ processors
Internal connectors
* Specifications are subject to change without notice.
2 x ATA/100 IDE connectors
1 x Floppy disk connector
2 x 68-pin Ultra 320 SCSI connectors
eRMC and IPMI connectors (for ASMC)
CPU/Chassis fan connectors
24-pin/8-pin SSI power connectors
IDE LED/SCSI LED connectors
20-pin Front panel connector
Chassis intrusion, SMBus, and WOR connectors
(Continued next page)
xi
PU-DLS/PU-DL specifications summary
BIOS features
Form Factor
Support CD contents
4Mb Firmware Hub (FWH), Award BIOS with ACPI, DMI,
Green, PnP features, and Enhanced Server BIOS features
Extended ATX form factor: 12 in x 13 in (30.5 cm x 33 cm)
Device drivers
Management software
Utilities
Contact information
xii
Chapter 1
This chapter describes the features of the
PU-DLS/PU-DL motherboard. It includes
brief explanations of the special attributes of
the motherboard and the new technology it
supports.
Thank you for buying the ASUS® PU-DLS/PU-DL motherboard!
The ASUS
and latest technologies making it another standout in the long line of
ASUS quality server motherboards!
The PU-DLS/PU-DL incorporates dual Intel
package coupled with the Intel
reliable and high performance dual-processor server platform.
Before you start installing the motherboard, and hardware devices on it,
check the items in your package with the list below.
PU-DLS/PU-DL motherboard delivers a host of new features
®
Xeon™ processors in 604-pin
®
E7501 (Plumas 533) chipset to deliver a
1.2Package contents
Check your PU-DLS/PU-DL package for the following items.
ASUS PU-DLS/PU-DL motherboard
Extended ATX form factor: 12 in x 13 in (30.5 cm x 33 cm)
ASUS PU-DLS/PU-DL support CD
I/O shield
80-conductor ribbon cable for UltraDMA100/66/33 IDE drives
Ribbon cable for a 3.5-inch floppy drive
Bag of extra jumper caps
PU-DLS/PU-DL User Guide
If any of the above items is damaged or missing, contact your retailer.
ASUS PU-DLS/PU-DL motherboard user guide
1-1
1.3Special features
1.3.1Product highlights
Latest processor technology
The PU-DLS/PU-DL motherboard supports the Intel® Xeon processor via
dual 604-pin surface mount ZIF sockets. The processor features the Intel
NetBurst™ micro-architecture that includes hyper-threading technology , a
rapid execution engine, a 533/400MHz system bus, and an execution trace
cache to offer a significant increase in performance. See page 2-4 for more
information.
DDR memory support
Employing the Double Data Rate (DDR) memory technology, the PU-DLS
motherboard supports up to 12GB of system memory using PC2100/1600
registered ECC DDR DIMMs. The ultra-fast 266/200MHz memory bus
doubles the speed of the PC133/PC100 SDRAM to deliver the required
bandwidth for the latest 3D graphics, multimedia, and Internet applications.
®
Advanced 64-bit PCI-X bus
The 64-bit/133MHz PCI-X bus onboard maximizes I/O bandwidth for the
next generation 64-bit PCI-X cards that support 133MHz bus. The PCI-X
specification 1.0a allows full peer-to-peer transactions between PCI buses
and provides options for intelligent I/O and server management cards.
Onboard LAN
The motherboard comes with the Intel® 82540EM 32-bit PCI Gigabit
Ethernet controller, and the Intel
controller, to fully support 10/100/1000BASE-T Gigabit Ethernet Media
Access Control (IEEE 802.3 compliant), and provide Physical Layer
Transceiver solution for high performance network applications.
®
82544GC 64-bit PCI-X Gigabit Ethernet
Dual-channel Ultra-320 SCSI
The Adaptec 7902W Ultra-320 SCSI controller and dual-channel SCSI
connectors are onboard to provide high-speed data transfers.
1-2
The Dual-Channel Ultra-320 SCSI features are available only on
PU-DLS models.
Chapter 1: Product introduction
Zero-Channel RAID (ZCR) feature
One 64-bit PCI-X slot on the motherboard supports the Zero-Channel
RAID feature and multi-level RAID 0, 1, 5.
The Zero-Channel RAID Card for ZCR function is supported only on
PU-DLS models.
ATA/100 IDE support
The dual-channel bus master IDE connectors comply with the ATA/100
protocol and supports ATA/100, Multi-Word DMA Mode2, PIO modes 3 & 4
IDE devices such as ATAPI IDE CD-ROM, CD-R/RW, ZIP, and LS-120
drives.
ASUS PU-DLS/PU-DL motherboard user guide
1-3
1.3.2Value-added solutions
Temperature, fan, and voltage monitoring
The CPU temperature is monitored by the ASUS ASIC to prevent
overheating and damage. The system fan rotations per minute (RPM) is
monitored for timely failure detection. The system voltage levels are
monitored to ensure stable supply of current for critical components.
Dual function power switch
While the system is ON, pressing the power switch for less than 4 seconds
puts the system to sleep mode or to soft-off mode, depending on the BIOS
setting. Pressing the power switch for more than 4 seconds lets the
system enter the soft-off mode regardless of the BIOS setting.
Wake-Up support
The motherboard includes Wake-On-LAN, Wake-On-Ring, and BIOS
Wake-Up features.
ACPI ready
The Advanced Configuration power Interface (ACPI) provides more energy
saving features for operating systems that support OS Direct Power
Management (OSPM).
Concurrent PCI
This feature allows multiple PCI transfers from PCI master buses to the
memory and processor.
Chassis intrusion detection
With this feature, the chassis intrusion circuitry logs “chassis-open” events
into the system BIOS. The onboard battery supports the chassis intrusion
detection feature even when the normal power is removed.
1-4
Chapter 1: Product introduction
Smart BIOS
The 4Mbit firmware hub (FWH) gives an easy-to-use interface that
provides more control and protection to the motherboard. The BIOS has a
boot block write protection and HD/SCSI/MO/ZIP/CD/Floppy boot
selection.
The SCSI boot selection is available only on PU-DLS BIOS setup.
Compliance
Both the BIOS and the hardware levels of the motherboard meet the
stringent requirements for SDG 2.0 certification. The new SDG 2.0
requirements for systems and components are based on the following
high-level goals: support for Plug-and-Play compatibility and power
management for configuring and managing all system components, 32-bit
device drivers, and installation procedures for Windows NT/2000/XP.
Color-coded connectors and descriptive icons make identification easy as
required by the PC ‘99 specification.
ASUS PU-DLS/PU-DL motherboard user guide
1-5
1.4Motherboard overview
Before you install the PU-DLS/PU-DL motherboard, familiarize yourself
with its physical configuration and available features to facilitate the
motherboard installation and future upgrades. A sufficient knowledge of the
motherboard specifications will also help you avoid mistakes that may
damage the board and its components.
1.4.1Major components
The following are the major components of the PU-DLS/PU-DL
motherboard as pointed out in the picture on page 1-7.
1.SSI-type power connector
2.DDR DIMM sockets
3.Intel
4.Intel
5.604-pin CPU sockets
6.8-pin 12V SSI power connector
7.SCSI connector (optional)
8.Adaptec 7902W SCSI controller
9.Firmware hub (FWH)
10.IDE connectors
11.Standby power LED
12.SCSI connector
13.ASUS ASIC
14.CPU Power Fail LED
15.LPC Super I/O controller
16.Floppy connector
17.Intel
®
E7501 northbridge
®
P64H2 PCI-X Hub
®
ICH3-S I/O Hub
18.ATI Rage-XL VGA controller
19.PCI-X slots (PCI-X1 to PCI-X4)
PCI slots (PCI1, PCI2)
®
20.Intel
21.Intel
22.PS/2 mouse port
23.Parallel port
24.RJ-45 port (for 32-bit LAN)
25.RJ-45 port (for 64-bit LAN)
26.VGA port
27.Serial port (COM1)
28.USB 1.1 ports 1 and 2
29.Keyboard port
82540EM 32-bit PCI
Gigabit Ethernet controller
®
82544GC 64-bit PCI-X
Gigabit Ethernet controller
1-6
The Adaptec 7902W SCSI controller and the onboard SCSI connectors
are available only on PU-DLS models.
See page 1-8 for the specifications of each component. Refer to
Chapter 2 for detailed information on the components.
Chapter 1: Product introduction
21
21356
4
7
20
19
18
2223
14
8
9
10
11
12
13151617
2928242726
ASUS PU-DLS/PU-DL motherboard user guide
25
1-7
1.4.2Core specifications
1
SSI/ATX power connector. This 24/20-pin connector is for an
SSI-type/ATX power supply.
2
DDR DIMM sockets. These six 184-pin DIMM sockets support up
to 12GB system memory using registered ECC PC2100/1600 DDR
DIMMs.
®
3
Intel
E7501 (Plumas 533) MCH. The E7501 Memory Controller
Hub (MCH) processor interface supports the System Bus Protocol
at peak bandwidth of 3.2 GB/s (400 MHz) or 4.26 GB/s (533 MHz),
and is optimized for dual Intel Xeon processors with 512-KB L2
cache. The MCH supports a 144-bit wide channel of Double Data
Rate (DDR) DRAM operating in lock-step, and provides Hub
Interface 1.5 connection for ICH3-S and Hub Interface 2.0
connection for P64H2 devices.
4
Intel
®
P64H2 PCI-X hub. The P64H2 is PCI/PCI-X 64-bit Hub 2
that provides high-performance I/O capability including 16-bit Hub
Interface 2.0 connection to MCH, and two independent 64-bit PCI/
PCI-X interfaces.
5
604-pin CPU sockets. Two 604-pin surface mount, Zero Insertion
Force (ZIF) sockets are onboard for the Intel
®
Xeon™ processor
with 512KB L2 cache and a 400/533 MHz system bus that allows
up to 3.2GB/s or 4.26GB/s data transfer rate. These sockets also
support Intel Xeon CPUs with Hyper-Threading Technology feature.
6
8/4-pin 12V SSI power connector. This 8/4-pin connector is for an
SSI-type/ATX power supply.
7
SCSI connector. This dual-channel SCSI connector supports up
to 30 devices and data transfers of 320Mbps.
The onboard SCSI connectors are available only on PU-DLS models.
®
8
Adaptec
AIC-7902W SCSI controller. The 7902W SCSI
controller is a PCI-X dual-channel Ultra320 SCSI ASIC compliant to
PC 2000-2001. Each channel supports a data transfer rate up to
320 MB/s on a Wide (16-bit) SCSI bus with Low Voltage Differential
(LVD) devices. The combined available SCSI throughput is 640
MB/s. In PCI and PCI-X modes, the controller operates as a
multifunction 32-bit or 64-bit bus master.
1-8
The Adaptec® AIC-7902W SCSI controller is available only on
PU-DLS models.
Chapter 1: Product introduction
9
Firmware hub. This 4Mb firmware hub (FWH) contains the
programmable BIOS program.
10
11
12
13
14
15
IDE connectors. These dual-channel bus master IDE connectors
support up to four Ultra DMA/100/66, PIO Modes 3 & 4 IDE
devices. Both the primary (blue) and secondary (black) connectors
are slotted to prevent incorrect insertion of the IDE ribbon cable.
Standby power LED. This LED lights up if there is a standby
power on the motherboard, and serves as a reminder to turn off the
system power before plugging or unplugging devices.
SCSI connector. (See description of item 7.)
ASUS ASIC. This chip performs multiple system functions that
include hardware and system voltage monitoring, IRQ routing,
among others.
CPU power fail LED. When lit, this LED (CPULED1) indicates that
the CPUs installed on the motherboard are not identical. This LED
does not light up if there is only one CPU.
LPC super I/O controller. This Low Pin Count (LPC) interface
provides the commonly used Super I/O functionality. The chipset
supports UART compatible serial ports, one parallel port with EPP
and ECP capabilities, a floppy drive, and PS/2 keyboard and
mouse.
16
17
18
Floppy disk connector. This connector accommodates the
provided ribbon cable for the floppy disk drive. One side of the
connector is slotted to prevent incorrect insertion of the floppy disk
cable.
®
Intel
ICH3-S I/O hub. The I/O Controller Hub 3 (ICH3-S) provides
the legacy I/O subsystem and integrates various I/O functions. The
ICH3-S provides Hub Interface 1.5 connection to the MCH, dualchannel Ultra ATA/100 bus master IDE controller, integrated LAN
controllers, three Universal Host Controller Interface (UHCI) USB
2.0 compliance, Low-Pin Count (LPC) interface, PCI Local Bus
Specification Rev. 2.2 compliance.
ATI Rage-XL VGA controller. This PCI-based VGA controller
supports 8MB display SDRAM for 1280x1024 and true color
resolutions.
ASUS PU-DLS/PU-DL motherboard user guide
1-9
19
20
21
PCI-X/PCI slots. Four 64-bit/100MHz PCI-X slots and two 32-bit/
33MHz PCI expansion slots support bus master PCI-X/PCI cards.
®
Intel
82540EM 32-bit PCI Gigabit Ethernet controller. This LAN
controller provides a 32-bit interface and supports 10/100/1000
Mbps data transfer rates.
®
Intel
82545GC 64-bit PCI-X Gigabit Ethernet controller. This
LAN controller is integrated Ethernet LAN component that supports
10/100/1000Mbps data rates. The 82544GC is optimized for LAN
on Motherboard (LOM), enterprise networking, and Internet
appliances that use a PCI or PCI-X bus. The controller provides a
32/64-bit 33/66MHz interface to the PCI bus that supports PCI
Specification Rev. 2.2, and to the PCI-X extension to the PCI Local
Bus Rev. 1.0a at clock rates of up to 133MHz.
22
23
24
25
26
27
28
PS/2 mouse port. This green 6-pin connector is for a PS/2 mouse.
Parallel port. This 25-pin port connects a parallel printer, a
scanner, or other devices.
RJ-45 port (for 32-bit LAN). This port allows connection to a Local
Area Network (LAN) through a network hub. This port is supported
by the 32-bit Intel
®
82540EM LAN controller.
RJ-45 port (for 64-bit LAN). This port allows connection to a Local
Area Network (LAN) through a network hub. This port is supported
by the 64-bit Intel
®
82544GC LAN controller.
Video port. This port is for a VGA monitor or other VGA-compatible
devices.
Serial port. This 9-pin COM1 port is for pointing devices or other
serial devices. A COM2 interface is also available. See section “2.8
Connectors.”
USB 1.1 ports 1 and 2. These 4-pin Universal Serial Bus (USB)
ports are available for connecting USB devices.
1-10
29
PS/2 keyboard port. This purple 6-pin connector is for a PS/2
keyboard.
Chapter 1: Product introduction
Chapter 2
This chapter describes the hardware setup
procedures that you have to perform when
installing system components. It includes
details on the switch/jumper settings and
connector locations on the motherboard.
Before you install the motherboard, study the configuration of your chassis
to ensure that the motherboard fits into it. The PU-DLS/PU-DL uses the
extended ATX form factor that measures 12 in x 13 in (30.5 cm x 33 cm).
Make sure to unplug the power cord before installing or removing the
motherboard. Failure to do so may cause you physical injury and
damage motherboard components.
2.1.1Placement 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.
2.1.2Screw holes
Place 10 screws into the holes indicated by circles to secure the
motherboard to the chassis.
Do not overtighten the screws! Doing so may damage the
motherboard.
The SCSI features are available only on PU-DLS models. These
components are grayed out in the above motherboard layout.
Chapter 2: Hardware information
2.3Before 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.
When lit, the CPU power fail LED (CPULED1) indicates that the CPUs
installed are not identical. Make sure to install identical CPUs if you
wish to use the dual-processor capability. This LED does not light up if
you installed only one CPU.
When lit, the standby power LED (LED1) 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.
CPULED1
PU-DLS
®
ON
CPU Failure
LED1
OFF
CPU OK
ON
PU-DLS Onboard LED
Standby
Power
ASUS PU-DLS/PU-DL motherboard user guide
OFF
Powered
Off
2-3
2.4Central Processing Unit (CPU)
2.4.1Overview
The motherboard comes with dual surface mount 604-pin Zero Insertion
Force (ZIF) sockets. The sockets are designed for the Intel Processor in
the 604-pin package with 512KB L2 cache. The processor includes the
Intel® NetBurst™ micro-architecture that features the hyper-pipelined
technology, rapid execution engine, 533/400MHz system bus, and
execution trace cache. Together, these attributes improve system
performance by allowing higher core frequencies, faster execution of
integer instructions, and data transfer rate of up to 4.2/3.2GB/s.
PU-DLS
®
Prestonia
Gold Arrow
PU-DLS Socket 604
Note in the illustration that the CPU 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!
The motherboard supports either one or two CPUs. If you are installing
only one CPU, you MUST install the CPU in socket 1.
CPU Socket 1
(outer socket)
2-4
CPU Socket 2
(inner socket)
Chapter 2: Hardware information
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