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.
ii
Contents
Notices........................................................................................................ v
Safety information...................................................................................... vi
About this guide .........................................................................................vii
PCH-DL specifications summary ............................................................... ix
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.
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.
v
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 adapter 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.
vi
About this guide
This user guide contains the information you need when installing and
configuring the motherboard.
How this guide is organized
This manual contains the following parts:
•Chapter 1: Product introduction
This chapter describes the features of the PCH-DL motherboard. It
includes brief descriptions of the special attributes of the motherboard
and the new technology it supports.
•Chapter 2: Hardware installation
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.
•Appendix: Reference information
This appendix includes additional information that you may refer to
when confiiguring the motherboard.
vii
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. Refer to the ASUS contact
information.
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.
viii
PCH-DL specifications summary
CPU
Chipset
Front Side Bus (FSB)
Memory
Expansion slots
Storage
Dual 604-pin sockets for Intel® Xeon™ Processors 3.2GHz
with Hyper-Threding Technology
On-die 1MB/512KB L2 cache
®
North bridge: Intel
South bridge: Intel® 6300ESB I/O Controller Hub (ICH)
533/400 MHz
Dual-channel memory architecture
4 x 184-pin DDR DIMM sockets for up to 4GB memory
Supports PC2700/PC2100 unbuffered ECC or non-ECC
DDR DIMMs
1 x AGP Pro/8X
2 x 3.3V/64-bit/66MHz PCI-X
3 x 5V/32-bit/33MHz PCI
Supported by south bridge (6300ESB ICH)
- 2 x UltraDMA100 connectors
- 2 x Serial ATA connectors (supports RAID 0/RAID 1
configurations under Windows XP)
Supported by Promise
Intel 82547GI Gigabit LAN controller
TI TSB43AB22A IEEE 1394 controller
ADI AD1980 6-channel audio CODEC
ASUS Q-Fan Technology
ASUS POST Reporter™
ASUS C.P.R. (CPU Parameter Recall)
1 x Parallel port
2 x Serial ports
1 x PS/2 keyboard port
1 x PS/2 mouse port
4 x USB 2.0 ports
1 x RJ-45 port
1 x IEEE 1394 port
Line In/Line Out/ Microphone ports
(continued on the next page)
ix
PCH-DL specifications summary
Internal I/O
BIOS features
Industry standard
Manageability
Power requirement
Form Factor
Support CD contents
CPU/SYSTEM/CHASSIS fan connectors
24-pin/8-pin SSI-type 12V power connectors
20-pin front panel connectors
Chassis intrusion connector
1 x IEEE 1394 connector
GAME/MIDI connector
S/PDIF Out connector
CD/AUX/Modem connectors
Front panel audio connector
4Mb Flash ROM, Phoenix-Award BIOS, PnP, DMI2.0,
WfM2.0, SM BIOS2.3
PCI 2.2, PCI-X 1.0a, USB 2.0
WfM 2.0. DMI 2.0, WOL/WOR by PME, chassis intrusion
SSI-type power supply (with 24-pin and 8-pin power plugs)
Extended ATX form factor: 12in x 10.5in (30.5cm x 26.7cm)
Device drivers
Management software
System utilities
ASUS contact information
*Specifications are subject to change without notice.
x
Chapter 1
This chapter describes the features of the
motherboard. It includes brief explanations
of the special attributes of the motherboard
and the new technology it supports.
1.3Special features ............................................. 1-2
ASUS PCH-DL motherboard
1.1Welcome!
Thank you for buying the ASUS® PCH-DL motherboard!
The ASUS
PCH-DL motherboard delivers a host of new features and latest
technologies making it another standout in the long line of ASUS quality
motherboards!
The motherboard incorporates the Intel
®
Xeon™ processor in 604-pin
package coupled with the Intel® 82875P chipset to provide a powerful
workstation platform solution.
Supporting 533 MHz FSB, up to 4GB of system memory with dual-channel
PC2700/PC2100 DDR SDRAM, high-resolution graphics via an AGP Pro/
8X slot, Serial ATA support, IEEE 1394, USB 2.0, and 6-channel audio
features, the PCH-DL Deluxe is your perfect vehicle to get ahead in the
world of power computing!
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 PCH-DL package for the following items.
ASUS PCH-DL motherboard
ASUS support CD
4 x SATA cables
2 x SATA power cables
3 x UltraDMA100/66 IDE and floppy drive cables (4-in-1)
1-port IEEE 1394 module
2-port USB2.0 module with Game port
S/PDIF Out module
I/O shield
Bag of extra jumper caps
User guide
If any of the above items is damaged or missing, contact your retailer.
ASUS PCH-DL motherboard
1-1
1.3Special features
Latest processor technology
The motherboard supports dual Intel® Xeon™ Processors via 604-pin surface
mount ZIF sockets. The processor has 1MB/512KB L2 cache, includes a
533/400MHz system bus, and features the Intel Hyper-Threading
Technology that allows up to 3.2GHz core frequencies.
Dual-channel DDR333 memory support
Employing the dual-channel DDR memory architecture, the motherboard
provides a solution that doubles the system memory bandwidth to boost
system performance. The motherboard supports up to 4GB of system
memory using PC2700/PC2100 ECC or non-ECC DDR DIMMs to deliver
up to 5.33GB/s data transfer rate for the latest 3D graphics, multimedia,
and Internet applications.
Serial ATA technology
The motherboard supports the new Serial ATA technology through the
SATA interfaces and the Intel® 6300ESB ICH and Promise® PDC20378
controllers onboard. The SATA specification allows for thinner, more
flexible cables with lower pin count, reduced voltage requirement, and up
to 150MB/s data transfer rate.
Multi-RAID solution
The motherboard has the Promise® PDC20378 controller to support multiRAID solution using Serial ATA/150 hard disks. The RAID0 (striping),
RAID1 (mirroring), and RAID 0+1 provide a cost-effective highperformance solution for added system performance and reliability.
AGP 8X support
The motherboard supports the latest graphic architecture, the AGP Pro/8X
interface (a.k.a. AGP 3.0), offering 2.1GB/s bandwidth which is twice that
of its predecessor AGP 4X.
USB 2.0 technology
The motherboard implements the Universal Serial Bus (USB) 2.0
specification, dramatically increasing the connection speed from the 12
Mbps bandwidth on USB 1.1 to a fast 480 Mbps on USB 2.0. USB 2.0 is
backward compatible with USB 1.1.
1-2
Chapter 1: Product introduction
Gigabit LAN solution
The Intel® 82547GI Gigabit Ethernet controller allows full-duplex Gigabit
performance on LAN on Motherboard (LOM) applications through the
Communication Streaming Architecture (CSA). Instead of connecting to
the PCI bus, the controller connects to the dedicated CSA bus on the
Memory Controller Hub (MCH) thus reducing the PCI bottlenecks by
freeing the PCI bus for other I/O operations.
IEEE 1394 support
The IEEE 1394 interfaces and the TI TSB43AB22A controller onboard
provide high-speed and flexible PC connectivity to a wide range of
peripherals and devices compliant to IEEE 1394a standards. The IEEE
1394 allows up to 400Mbps transfer rates through simple, low-cost, highbandwidth asynchronous (real-time) data interfacing between computers,
peripherals, and consumer electronic devices such as camcorders, VCRs,
printers,TVs, and digital cameras.
6-channel audio feature
The SoundMAX-class ADI AD1980 AC ‘97 audio CODEC supports
6-channel 5.1 surround sound output, stereo microphone input, variable
Sample Rate Conversion (SRC), professional quality 103-dB out put with
94-dB SNR, and analog enumeration capability. The SoundMAX 4 XL
software features the AudioESP™ (Audio Enumeration and Sensing
Process) that allows intelligent detection of the peripherals plugged into
the audio ports and identifies the incompatible devices, if any.
ASUS Q-Fan technology
The ASUS Q-Fan technology smartly adjusts the fan speeds according to
the system loading to ensure quiet, cool, and efficient operation.
ASUS POST Reporter™
The motherboard offers a new exciting feature called the ASUS POST
Reporter™ to provide friendly voice messages and alerts during the
Power-On Self-Tests (POST) informing you of the system boot status and
causes of boot errors, if any. The bundled Winbond Voice Editor software
lets you to customize the voice messages in different languages.
ASUS PCH-DL motherboard
1-3
ASUS EZ Flash BIOS
With the ASUS EZ Flash, you can easily update the system BIOS even
before loading the operating system. No need to use a DOS-based utility
or boot from a floppy disk.
C.P.R. (CPU Parameter Recall)
The C.P.R. feature of the motherboard BIOS allows automatic re-setting to
the BIOS default settings in case the system hangs due to overclocking.
When the system hangs due to overclocking, C.P.R. eliminates the need to
open the system chassis and clear the RTC data. Simply shut down and
reboot the system, and BIOS automatically restores the CPU default
setting for each parameter.
1-4
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 switches, jumpers, and
connectors on the motherboard.
Hardware information
Chapter summary
2.1Before you proceed ....................................... 2-1
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 green LED (SB_PWR1) 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.
This warning LED (LED1) lights up if you installed two CPUs of
different type/voltage. You must install identical CPUs on this
motherboard.
The red LED (AGP_WARN1) is a smart protection from motherboard
burn out caused by an incorrect AGP card. If you plug in any 3.3V AGP
card into the 1.5V AGP slot, this LED lights up thus preventing the
system to power up. This LED remains off if you plug in a 1.5V AGP
card.
AGP_WARN1
ON
Incorrect
AGP Card
LED1
OFF
Correct
AGP Card
PCH-DL
PCH-DL Onboard LED
ASUS PCH-DL Deluxe motherboard
ON
CPU Type/Voltage
not identical
SB_PWR1
ON
Standby
Power
OFF
CPU Type/Voltage
identical
OFF
Powered
Off
2-1
2.2Motherboard installation
Before you install the motherboard, study the configuration of your chassis
to ensure that the motherboard fits into it.
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.
2.2.1Placement 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.
2.2.2Screw holes
Place ten (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.
Place this side towards
the rear of the chassis
2-2
Chapter 2: Hardware information
2.2.3Motherboard layout
26.8cm (10.5in)
PS/2KBMS
T: Mouse
B: Keyboard
COM1
COM2
Bottom:
Top:
T:USB4
1394
B:USB3
USB2.0
T: USB1
B: USB2
Top:Line In
Center:Line Out
Below:Mic In
MODEM1
Audio
Codec
SPDIF_OUT
SSI_POWER
PARALLEL PORT
CPU_FAN1
CPU_FAN2
Top:
USBPW2
RJ-45
Intel
82547GI
Gigabit
Ethernet
CD1
CR2032 3V
Lithium Cell
CMOS Power
I/O
Super
GAME1
KBPWR1
mPGA 604
CPU1
USBPW1
mPGA 604
CPU2
FP_AUDIO1
Accelerated Graphics Port (AGP8X1)
AGP_WARN1
PCI1 (32-bit, 33MHz 5V)
AUX1
PCI2 (32-bit, 33MHz 5V)
PCIX1
(64-bit, 66MHz 3V)
PCIX2
(64-bit, 66MHz 3V)
PCI3 (32-bit, 33MHz 5V)
SYS_FAN1
PCH-DL
IEEE1394_1
Intel
82875P
Canterwood
Intel
Hance Rapids
(South Bridge)
TI
TSB43AB22A
J3
SATA1
SATA2
SYS_FAN3
IDE_LED1
PANEL1
CON12V
CHASSIS1CLRTC1
CHA FAN1
DDR DIMM2 (72 bit, 184-pin module)
DDR DIMM3 (72 bit, 184-pin module)
DDR DIMM1 (72 bit, 184-pin module)
J1
SYS_FAN2
SB_PWR1
SATA_RAID1 SATA_RAID2
DDR DIMM4 (72 bit, 184-pin module)
BIOS
4Mbit
Flash
SEC_IDE1
PRI_IDE1
RAID
Controller
PROMISE
PDC20378
SMB1
FLOPPY1
30.5cm (12in)
PRI_RAID1
ASUS PCH-DL Deluxe motherboard
2-3
2.2.4Layout Contents
Sockets/SlotsPage
1.CPU sockets2-5
2.DDR DIMM sockets2-13
3.PCI-X/PCI slots2-15
4.AGP Pro slot2-18
Jumpers
1.Keyboard power (3-pin KBPWR1)2-19
2.CPU external frequency selection (3-pin J1)2-19
3.IEEE 1394 setting (3-pin J3)2-20
4.USB device wake-up (3-pin USBPW1, USBPW2)2-20
5.RAID enable (3-pin J2)2-21
6.Clear RTC RAM (3-pin CLRTC1)2-21
Rear panel connectors
1.PS/2 mouse port2-22
2.Parallel port2-22
3.IEEE 1394 port2-22
4.RJ-45 port2-22
5.Line In port (light blue)2-22
6.Line Out port (light green)2-22
7.Microphone port (pink)2-22
8.USB 2.0 ports 3 and 42-22
9.USB 2.0 ports 1 and 22-22
10. Serial ports2-22
11. PS/2 keyboard port2-22
Internal connectors
1.Floppy disk drive connector (34-1 pin FLOPPY1)2-23
14. Front panel audio connector (10-1 pin FP_AUDIO1)2-31
15. Hard disk activity LED (2-pin IDE_LED1)2-31
16. System panel connector (20-pin PANEL)2-32
- System Power LED (3-pin PLED)2-32
- Message LED (2-pin MLED)2-32
- System warning speaker (4-pin SPKR)2-32
- Hard disk activity (2-pin HD_LED)2-32
- Power switch / Soft-off switch (2-pin PWR_SW)2-32
- Reset switch (2-pin RESET)2-32
(continued)
ASUS PCH-DL Deluxe motherboard
2-5
2.3Central Processing Unit (CPU)
2.3.1Overview
The motherboard comes with dual surface mount 604-pin Zero Insertion
Force (ZIF) sockets. The sockets are designed for the Intel® Xeon™
Processor in the 604-pin package with 1MB/512KB L2 cache.
Prestonia
Gold Arrow
PCH-DL
PCH-DL Socket 604
2.3.2Installing the CPU
Note in the above 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.
If installing only one CPU, use CPU socket 1 to ensure system
stability..
Socket for CPU1
Socket for CPU2
2-6
Chapter 2: Hardware information
Incorrect installation of the CPU into the socket may bend the pins and
severely damage the CPU!
Follow these steps to install a CPU.
1.Locate the 604-pin ZIF sockets on
the motherboard. Flip up the
socket lever and push it all the
way to the other side.
Make sure that the socket
lever is pushed back all the
way, otherwise the CPU does
not fit in completely.
Marked Corner
2.Position the CPU above the
socket as shown.
3.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!
4.Carefully push down the socket
lever to secure the CPU. The lever
clicks on the side tab to indicate
that it is locked.
5.Apply the thermal interface
material (thermal grease) to the
top of the CPU. This thermal
grease should come with the CPU
package.
ASUS PCH-DL Deluxe motherboard
2-7
2.3.3Installing the CPU heatsink and fan
The Intel
®
Xeon™ processors require an Intel certified heatsink and fan
assembly to ensure optimum thermal condition and performance.
When you buy a boxed Intel CPU, the package includes the heatsink, fan,
retention brackets, screws, thermal grease, installation manual, and other
items that are necessary for CPU installation.
1.Perform the installation steps 1 to 3 in this section before
installing you motherboard into the chassis.
2.Make sure that you have applied the thermal grease to the top of
the CPU before installing the heatsink and fan.
3.Refer to the installation manual that came with the CPU package
for details on heatsink/fan assembly and installation.
To install the CPU heatsink and fan:
1.With the motherboard on a flat stable surface (such as a table), place
the thermal plate underneath a CPU socket, matching the standoffs on
the plate with the four holes around the CPU socket.
The figure below shows the corresponding matches of the
motherboard holes and standoffs.
Motherboard hole
Standoff
CPU
thermal
plate
2-8
Chapter 2: Hardware information
2.Place the heatsink retention
mechanism over the CPU socket,
matching its holes with the four
holes on the motherboard and the
standoffs on the thermal plate.
Heatsink retention mechanism
3.Secure the retention mechanism
with the thermal plate using four
screws.
4.Position the heatsink on top of the
CPU, having its angled side (with
cut corners) facing the memory
sockets. Make sure that the
heatsink base fits completely on
the retention mechanism.
Heatsink angled side
ASUS PCH-DL Deluxe motherboard
2-9
5.Secure the heatsink with the
retention clips.
Retention clip
a.Insert the center hole of a
retention clip into the center tab
on the retention mechanism.
b.Slightly move the clip to the right
so that the center tab is
positioned on the narrow side of
the hole. This ensures that the
side holes fit on the side tabs.
c.Press one end of the clip to snap
its hole on the right side tab.
5a
5c
Center tab position when
retention clip is in place
d.Press the other end of the clip to
snap its hole on the left side tab.
This secures one side of the
heatsink.
5b
5d
6.Follow step 5 to install the other retention clip, and completely secure
the heatsink.
2-10
Chapter 2: Hardware information
7.Detach the cover of the air tunnel
by twisting it back and forth.
Detachable cover
8.Align the two pegs on the air
tunnel with the corner holes of the
fan module. Press the module
down until the four hooks on the
air tunnel snap on its sides.
Hook
9.Position the fan and air tunnel
assembly over the heatsink such
that the two curved corners match
the angled side of the heatsink.
Curved corners
10.Align and insert the side rails of
the air tunnel into the grooves on
the retention mechanism.
NOTE You may need to slightly press
out the side of the retention
mechanism to properly insert the
air tunnel.
Groove (inner side)
Corners with pegs
Side rail
ASUS PCH-DL motherboard
2-11
11. Press down the fan and air tunnel
assembly until the side rails slide
past the grooves and over the rail
stoppers. The protruding tab on
each corner of the air tunnel
should snap over the dents on the
retention mechanism.
Rail stopper
Side rail
12.Connect the fan cable to the
connector CPU_FAN1 on the
motherboard.
Protruding tabs
Make sure to connect to the
correct fan connector.
Otherwise, you will get a
warning message during
POST.
Fan connector
Fan cable
13.To install a second CPU and heatsink, follow the same procedure as in
the first CPU installation.
For the second CPU, make sure to connect the CPU fan cable to the
connector CPU_FAN2.
2-12
Chapter 2: Hardware information
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