AccelerTech ATO2161 User manual

ATO2161 Server Motherboard
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http://www.accelertech.com

Copyrights and Disclaimers
The information in this User’s Manual has been carefully reviewed and is
believed to be accurate. The vendor assumes no responsibility for any
inaccuracies that may be contained in this document, makes no commitment to
update or to keep current the information in this manual, or to notify any person
or organization of the updates.
AccelerTech reserves the right to make changes to the product described in this
manual at any time and without notice. This product, including software, if any,
and documentation may not, in whole or in part, be copied, photocopied,
reproduced, translated or reduced to any medium or machine without prior
written consent.
IN NO EVENT WILL ACCELERTECH BE LIABLE FOR DIRECT, INDIRECT,
SPECIAL, INCIDENTAL, SPECULATIVE OR CONSEQUENTIAL DAMAGES
ARISING FROM THE USE OR INABILITY TO USE THIS PRODUCT OR
DOCUMENTATION, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
DAMAGES. IN PARTICULAR, THE VENDOR ALL NOT HAVE LIABILITY FOR
ANY HARDWARE, SOFTWARE, OR DATA STORED OR USED WITH THE
PRODUCT, INCLUDING THE COSTS OF REPAIRING, REPLACING,
INTEGRATING, INSTALLING OR RECOVERING SUCH HARDWARE,
SOFTWARE, OR DATA.
Any disputes arising between manufacturer and customer shall be governed by
the laws of the County of Los Angeles in the state of California, USA.
This shall be the exclusive venue for the resolution of any such disputes. Total
liability for all claims will not exceed the price paid for the hardware product.
Unless you request and receive written permission from
AccelerTech, you may not copy any part of this document.
Information in this document is subject to change without notice.
Other products and companies referred to herein are trademarks
or registered trademarks of their respective companies or mark
holders.
Copyright © 2004 by AccelerTech
All rights reserved.

AccelerTech ServerBoard Manual
COPYRIGHTS AND DISCLAIMERS.......................................... C-I
ATTENTION: READ FIRST! ...................................... C-II
Overview
GENERAL SAFETY PRECAUTIONS.......................................C-2
ESD PRECAUTIONS ........................................................C-2
OPERATING PRECAUTIONS................................................C-2
ABOUT THIS USER'S MANUAL ...........................................C-3
GETTING HELP ...............................................................C-3
SERVERBOARD SPECIFICATIONS........................................C-5
SERVERBOARD LAYOUT...................................................C-6
I/O PORT ARRAY ...........................................................C-7
SERVERBOARD MAP .......................................................C-7
Hardware Installation
MAP OF JUMPERS ...........................................................C-9
JUMPER SETTINGS ........................................................C-10
INSTALLING MEMORY .....................................................C-11
RECOMMENDED MEMORY CONFIGURATIONS ......................C-13
INSTALLING THE PROCESSOR AND HEATSINK .....................C-14
MAP OF SERVERBOARD CABLE CONNECTORS ..................C-16
ATX POWER CONNECTORS ............................................C-17
FLOPPY DISK DRIVE CONNECTOR ...................................C-18
PRIMARY IDE CONNECTORS ...........................................C-18
FRONT PANEL SWITCHES ..............................................C-19
FRONT/BACK/CPU/AUX FAN CONNECTORS .....................C-20
REAR PANEL I/O PORTS ...............................................C-21
ADDITIONAL I/O CONNECTORS ........................................C-22
INSTALLING EXPANSION CARDS .......................................C-23
ASSIGNED IRQS AND EXPANSION CARDS .........................C-23
POWERING ON YOUR SYSTEM ..........................................C-24
BIOS
STARTING THE BIOS SETUP ..........................................C-26
USING THE BIOS SETUP UTILITY....................................C-26

BIOS SETUP MAIN MENU .............................................C-28
MASTER AND SLAVE SUBMENUS ....................................C-29
ADVANCED MENU .........................................................C-31
CHIPSET CONFIGURATION SUBMENU ...............................C-32
KEYBOARD CONFIGURATION SUBMENU ............................C-34
I/O DEVICE CONFIGURATION SUBMENU ...........................C-35
CONSOLE REDIRECTION SUBMENU .................................C-37
PCI DEVICES SUBMENU ...............................................C-38
SECURITY MENU ...........................................................C-40
PASSWORDS.................................................................C-40
SETTING AND USING PASSWORDS ....................................C-41
POWER MENU ..............................................................C-42
BOOT MENU ................................................................C-44
SERVER MENU .............................................................C-45
EXIT MENU ..................................................................C-46
EXIT SAVING CHANGES .................................................C-46
EXIT DISCARDING CHANGES ...........................................C-46
LOAD SETUP DEFAULTS ................................................C-47
DISCARD CHANGES .......................................................C-47
SAVE CHANGES............................................................C-47
PHOENIX BOOT UTILITIES...............................................C-48
USING PHOENIX QUIETBOOT ..........................................C-48
PHOENIX MULTIBOOT ....................................................C-49
BIOS FLASH UPGRADE UTILITY .....................................C-50
CREATE A CRISIS RECOVERY DISKETTE ...........................C-50
UPDATING THE CRISIS RECOVERY DISKETTE .....................C-51
EXECUTING PHOENIX PHLASH .........................................C-51
DISABLING MEMORY MANAGERS .....................................C-52
Troubleshooting C-53
POST Errors and Beep Codes C-56
Addendum A: Recommended Memory Modules C-58
Addendum B: Symptom Report Form C-60

Serverboard Manual
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ATTENTION: READ FIRST!
¡INSTALLATION WARNING!
Use Caution When Installing the ServerBoard into the System Chassis
The components underneath the PS/2 Mouse/Keyboard connectors around the mounting
hole are very FRAGILE and can be knocked off of their soldered positions, resulting in
IRREPARABLE DAMAGE during installation when sliding the board into a system chassis.
Gently install the ServerBoard into the chassis, and use a Mylar Sheet to cover and protect
the underside of the ServerBoard during installation. Take care NOT to scrape the bottom of
the ServerBoard on the chassis stand-offs and mounting holes.
These components are necessary for many different operations, including the Mouse
and the Keyboard. If you damage any of these chips, one of the symptoms is that the
ServerBoard will NOT respond to key strokes through the PS/2 port and the ServerBoard will
have to be replaced. Other symptoms include the loss of response or functionality in any of
the rear I/O ports. Contact your authorized dealer for more information.
The Damage noted here in this WARNING may require the ServerBoard to be replaced.
Due to the Nature of the Damage, this may be considered Out-of-Warranty Damage. Make
certain that ALL documented procedures are followed correctly.
Screw-
Hole

Serverboard Manual
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This Page is Intentionally Left Blank

C-1
Overview
Overview
Overview
Thank you for choosing this high performance Server motherboard. The dual AMD® Opteron
micro-Socket 940 motherboard (M/B) based on the SSI form factor and is congured with
the AMD® HyperTransport I/O Hub 8111 and PCI-X Tunnel 8131 chipsets. The board
features a Hyper Transport speed of 1600 MTs (MegaTransfers per second).
For memory options, there are eight sockets in a four + four conguration to support up to
16 GB of memory using Registered PC2700/2100 ECC DDR memory modules.
Flexibility and expandability are provided by two 64-bit/133MHz PCI-X slots, two PCI 64-
bit/66MHz PCI slots, and two 32-bit/33Mhz PCI slots. This selection of PCI slots permits
the use of numerous add-on cards and Peer PCI transaction support provides increased
system performance.
Other features include onboard Promise Serial ATA RAID interfaces, dual Broadcom Gigabit
Ethernet controllers, and an onboard ATI® RageXL video controller with 8MB memory to
provide high system capabilities that meet a wide range of demanding Sever applications.
Before we begin the manual, we would like to go over some precautions to insure the safety
of both the serverboard and the technician/operator. Please read the General Safety, ESD,
and Operating Precautions in their entirety before beginning.
This Section is divided as follows:
General Safety Precautions C-2
ESD Precautions C-2
Operating Precautions C-2
About this User's Manual C-3
Getting Help C-3
ServerBoard Specications C-5
ServerBoard Layout C-6
ServerBoard Map C-7
I/O Port Array C-7

Serverboard Manual
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Overview
C-3
Overview
Overview
¡System Safety!
ESD PRECAUTIONS
Electrostatic discharge (ESD) is generated by two objects with different electrical charges
coming into contact with each other. An electrical discharge is created to neutralize this
difference, which can damage electronic components and printed circuit boards. The
following measures are generally sufcient to neutralize this difference before contact is
made to protect your equipment from ESD:
* Use a grounded wrist strap designed to prevent static discharge.
* Keep all components and printed circuit boards (PCBs) in their antistatic bags until ready
for use.
* Touch a grounded metal object before removing the board from the antistatic bag.
* Do not let components or PCBs come into contact with your clothing, which may retain a
charge even if you are wearing a wrist strap.
* Handle a board by its edges only; do not touch its components, peripheral chips,
memory modules or contacts.
* When handling chips or modules, avoid touching their pins.
* Put the motherboard and peripherals back into their antistatic bags when not in use.
* For grounding purposes, make sure your computer chassis provides excellent
conductivity between the power supply, the case, the mounting fasteners and the
motherboard.
* After accessing the inside of the system, close the system back up and secure it to the
rack unit with the retention screws after ensuring that all connections have been made.
OPERATING PRECAUTIONS
Care must be taken to insure that the chassis cover is in place when the server is
operating to assure proper cooling. Out of warranty damage to the server can occur if
this practice is not strictly followed.
GENERAL SAFETY PRECAUTIONS
* Keep the area around the Server clean and free of clutter.
* Servers weigh a lot. They can average about 50 lbs. (~22.68 kg)
When lifting the system, two people should lift slowly from opposite ends with their feet
spread out to distribute the weight. Always keep your back straight and lift with your legs.
* Place the chassis top cover and any system components that have been removed away
from the system or on a table so that they won’t accidentally be stepped on.
* While working on the system, do not wear loose items such as neckties and unbuttoned
shirt sleeves. They can come into contact with electrical circuits or get pulled into a
cooling fan.
* Remove any jewelry or metal objects from your body, which are excellent metal
conductors and can create short circuits and harm you if they come into contact with
printed circuit boards or areas where power is present.

Serverboard Manual
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Overview
C-3
Overview
Overview
ABOUT THIS USER'S MANUAL
This manual explains how to build your system in detail. Please follow the procedures in this
User Manual carefully and pay special attention to these icons.
IMPORTANT
This icon informs you on particularly important details regarding
the setup or maintenance of your system. While we point out
the most vital paragraphs in a chapter, you should always read
the entire section carefully.
WARNING
This icon alerts you to potential dangers during the setup of
your system. These warnings should not be considered as the
whole of your safety precautions. Never forget that computers
are electronic devices and are capable of delivering and
receiving shocks. Prevent damage to yourself and your
serverboard by always working with proper grounding straps
and making sure that your system is turned off and unplugged
whenever you are working on it,
NOTE
This icon brings certain notes to your attention during the setup
process. It provides you with useful information especially for
setting up a new system.
TIP
This icon gives you tips on how to congure your system in
simple and easy ways. This icon provides useful descriptions
in helping you congure your system.
GETTING HELP
If a problem arises with yours system during Installation or Operation, you should rst ask
your dealer for help as they have most likely congured your system. They generally have
the best grasp of your issues and the fastest response for your symptoms. If your dealer
is near your location, it is recommended that you rst bring your system to them to have it
serviced instead of attempting to solve the problem yourself.
If those options don't work for you, accelerTECH also provides some helpful resources to
help you.
1. Visit accelerTECH™ website at www.accelerTECH.com and navigate to this
product’s page which contain links to product updates such as Jumper settings
or BIOS updates.
2. The FAQ (Frequently Asked Questions) sections in the accelerTECH™ website
are often helpful since other users often have the same questions.
3. Email us at: [email protected] and we will try to answer your questions
within 24 hours. Before you email your symptoms to [email protected],
ll in the symptom report to inform and aid our engineers in solving your problem
quickly.

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Overview
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Overview
Overview
This Page is Intentionally Left Blank

Serverboard Manual
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Overview
C-5
Overview
Overview
SERVERBOARD SPECIFICATIONS
ServerBoard ATO2161-I (with Parallel ATA)
ATO2161-A (with Serial ATA)
Processor AMD Dual Opteron Socket 940 CPUs
with HyperTransport at 1600 MT/s
* Built-In Memory Controller Hub (MCH)
Chipset * AMD 8111 (HyperTransport I/O Hub)
* AMD 8131 (PCI-X Tunnel)
Memory * 4+4 sockets for Registered PC2700/PC2100 ECC DDR DIMMs
* Supports total system memory size of 16 GB
Internal I/O connectors * Floppy Connector (Floppy Controller supports 1.44 MB, 2.88 MB,
Japanese Floppy 3 Mode and LS-120 oppy disk drives)
* Thin-Type Floppy Connector for Slim Floppy Drives
* 2x IDE 40-pin connectors (BIOS supports IDE CD-ROM boot up)
* 2x USB 1.1 Headers for 4 extendable USB ports
* UART 16550 serial port header (for COM2)
* AMC Connector for BMC (Baseboard Management Controller) module
On-Board VGA ATI RageXL with 8MB Memory
On-Board Dual LAN 2x Broadcom BCM5702 Gigabit Ethernet controllers
* Fail-Over Support
Expansion Slots * 2x PCI-X 64 bit / 133/100 MHz
* 2x PCI 64 bit / 66/33 MHz
* 2x PCI 32 bit / 33 MHz
Serial ATA
(ATO2161-A only)
Four (4) integrated Promise PDC20319 Serial ATA ports
Supports RAID 0,1,10
Rear Panel I/O 1x UART 16550 serial port (COM1)
2x onboard USB 1.1 connectors
VGA port for on-board ATI RageXL chip
2x GigaBit Ethernet LAN RJ-45 ports
PS/2 mouse and keyboard connectors with Wake-Up function
System Management AMC connector for Baseboard Management Controller
Hardware Monitor ADM1026 (CPU Thermal, Fan, Voltage, Intrusion)
Super I/O NS87360
IPMI 1.5 (optional with Remote Management Card)
SmartWatch for hardware problem alerts
Fault-Tolerance, Fail-Over Support and Timing, Alert on LAN ready
System BIOS 4Mb Flash EEPROM with Phoenix BIOS
I2C support. SMBIOS 2.3 and DMI 2.0 compliant
Secure Boot, Multiple Boot
Form Factor Extended ATX form factor (12” x 13”)
EPS 12V power connectors (24 pin + 8 pin)
Miscellaneous Integrated VRM support (spec 9.1)

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Overview
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Overview
Overview
SERVERBOARD LAYOUT
ATI Rage XL
Broadcom
Mouse
Keyboard
USB
COM1
VGA
GigE LAN
COM2
AMC
Connector
PCI-X
PCI 32-bit
PCI 64-bit
AMD 8111
AMD 8131
Power
IDES,P
Floppy
Slim Floppy
S-ATA Port
4,2,1,3
Promise
S-ATA
CPU0 (H0)
Power
H1 Memory
DIMM 2,3,0,1
H0 Memory
DIMM 1,0,3,2
CPU1 (H1)
LAN1
LAN2
(ATO2161-A Version Only)
(ATO2161-A Version Only)

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Overview
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Overview
Overview
SERVERBOARD MAP
I/O PORT ARRAY
I/O Port Array
Sys Fan 0,1
Promise
S-ATA RAID
LED Board
Fr. Fan 1
Fr. Fan 0
H0 Fan 1
24-Pin
Power
8-pin
Power
Serial-ATA
Connectors
H0 Fan 0
H1 Fan 0
H1 Fan 1
AMD
Opteron Socket
940
(H1)
System Fan
Aux. Power
Connector
IDE S,P
Floppy
Thin-type Floppy
connector
USB Header 1
USB Header 0
Front Panel
Switches
COM 2
AMC Connector
DDR Momory x4
DDR Memory x4
64-bit/133 MHz PCI-X x2 64-bit/66 MHz PCI x2
32-bit/33 MHz PCI x2
PS/2 Mouse
PS/2 KBD
USB
Ports COM1 VGA LAN2 LAN1
AMD
Opteron Socket
940
(H0)
(ATO2161-A Version Only)
(ATO2161-A Version Only)

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Hardware Install
Hardware
Install
WARNING
This motherboard contains sensitive electronic components that can be easily damaged by
static electricity. Follow the instructions carefully to ensure correct Installation and to avoid
static damage.
Hardware Installation
this section, we detail the procedures for how to install processors and other hardware
components in your ServerBoard. Go to the specic sections to read more about section
you are interested
This section is divided as follows:
Map of Jumpers C-9
Jumper Settings C-10
Installing Memory C-11
Recommended Memory Congurations C-13
Installing the Processor and Heatsink C-14
Map of ServerBoard Cable Connectors C-16
ATX Power Connectors C-17
Floppy Disk Drive Connector C-18
Primary IDE connectors C-18
Front Panel Switches C-19
Front/Back/CPU/Aux Fan Connectors C-20
Rear Panel I/O Ports C-21
Additional I/O Connectors C-22
Installing Expansion Cards C-23
Assigned IRQs and Expansion Cards C-23
Powering on your System C-24

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Hardware Install
Hardware
Install
MAP OF JUMPERS
Refer to the following illustration to nd the location of the ServerBoard's jumpers
On-Board
VGA Select
PCI 64 Bit
Jumper
PCI-X
Jumper
Clear CMOS

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Install
PCI-X Slot Speed Select Jumper
This header lets you determine the bus speed of the PCI-X slots. The speed can be set to
either 133 MHz (default) or 100 MHz.
PCI 64 Bit Slot Speed Select Jumper
This header lets you determine the bus speed of the PCI-X 64-bit slots. The speed can be
set to either 64 MHz (default) or 33 MHz
1-2 2-3
66 MHz Enabled
(default)33 MHz Enabled
1-2 2-3
133 MHz Enabled
(default) 100 MHz Enabled
On-Board VGA Select Jumper
If you are going to use the onboard VGA feature, you need to set the jumper to enable the
VGA header.
1-2 2-3
VGA Enabled
(default)VGA Disabled
Clear CMOS Header
The onboard button cell battery powers the CMOS RAM. It contains all the BIOS setup
information. Keep the jumper connected to pins 1-2 (Default) to retain the RTC data as
shown below.
Under certain circumstances, you will need to reset system settings. Follow these
instructions to clear the CMOS RTC data:
1. Turn off the computer and Remove the Power Cord
2. Short pins 2 and 3 with a jumper for a few seconds.
3. Replace the jumper to pins 1 and 2.
4. Turn on your computer by pressing the power-on button.
5. Hold down <Delete> during boot and select either <Load Optimal Defaults>
or <Load Failsafe Defaults> in the “Exit” section. Then go through the BIOS
setup to re-enter user preferences. Refer to Chapter 2 BIOS SETUP for more
information.
1-2 2-3
Normal
(default)
Clear
CMOS
JUMPER SETTINGS
IMPORTANT
If you do not remove the power cord, then the CMOS may NOT be cleared.

Serverboard Manual
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Hardware
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C-11
Hardware Install
Hardware
Install
Memory Installation Procedures
This section outlines how to install Registered PC2100/PC2700 DDR DIMMs into the
ServerBoard.
INSTALLING MEMORY
This ServerBoard uses Dual Inline Memory Modules (DIMM). Two 4-DIMM socket
memory banks are available, one memory bank for each CPU socket. The DIMM sockets
accommodate PC2100/PC2700 (DDR266/DDR333) and Double Data Rate (DDR) memory
modules in 128MB, 256MB, 512MB, 1GB and 2GB size combinations. Total installed
memory size is between a minimum of 128MB to a maximum of 16GB.
The Design of the processor is such that the Memory Controller Hub (MCH) is built-in to the
processor. Therefore, if there is no processor present, the respective DIMM Bank is NOT
recognized. This is important to note when there is only one (1) processor present (CPU0).
Only the H0 DIMM bank will be active, allowing only 4 DIMMs for a max memory of 8 GB.
IMPORTANT
* The ServerBoard has strict memory and timing requirements. Before buying DDR
(Double Data Rate) DIMMs for use with the ServerBoard, it is recommended that
you consult your local reseller for the best and most compatible memory to use.
* The Memory Controller Hub is built-in to the Processor. If NO processor is
present, the respective DIMM Bank is NOT recognized.
* This ServerBoard only supports Registered PC2100/PC2700 (DDR266/DDR333)
compliant modules.
1. Locate the Memory Banks on the ServerBoard, where you will be installing the
DIMMs.
H1 Memory
Bank: 0-3
2 3 0 1
H0 Memory
Bank: 0-3
1 0 3 2

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Hardware Install
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Install
IMPORTANT
* The Opteron features a 128-bit wide DDR memory interface. To take advantage
of the 128-bit interface, you must install DIMMs in pairs of two (2). DIMM slots
0 and 1 are paired, and slots 2 and 3 are paired. If you are only installing two
DIMMS into a Memory Bank, it is recommended that you install them in slots 0
and 1 to get the full bandwidth. (This is True for the H1 DIMM bank as well.)
* Remember to populate the H0 DIMM bank with at least 2 DIMMs (for CPU0)
before inserting memory modules in the H1 DIMM bank (for CPU1).
80 pins 104 pins
2. Make sure the DIMM’s pins are facing down, and check that the pin
arrangement on the memory module resembles the one pictured below.
3. Insert the module into the DIMM socket and press down evenly on both ends
rmly until the DIMM module is securely in place. (The tabs of the DIMM socket
will close-up to hold the DIMM in place when the DIMM is properly installed on
the socket’s bottom.)
4. Repeat step 1 to step 3 for all additional DIMM modules.
Installing Memory continued...
Notch Notch
The notch
hole should
line up with
the notch on
the slot
Release Tab
Release Tab
DIMM Slot 0
DIMM Slot 1

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RECOMMENDED MEMORY CONFIGURATIONS
The AMD Opteron processors have very specic memory module requirements, and due to
the design of the serverboard, there are certain congurations of memory that work best to
make the most effective use of the memory bandwidth.
The AMD Opteron features 128-bit DDR memory channels. DDR Memory Modules are only
64-bit. In order to benet from the full bandwidth, you should always install the DIMMs in
pairs. The serverboard is designed to pair up DIMM slots 0/1 and slots 2/3 for the 128-bit
pathway.
The Opteron is designed with the Memory Controller Hub (MCH) built-in to the processor.
The DIMM Banks are thus controlled by the processor. If a processor is NOT present, then
the respective DIMM Bank is NOT recognized. When only one (1) processor is installed
in CPU0, only the H0 DIMM bank is active. DIMMs in the H1 DIMM Bank will NOT be
recognized.
The memory nodes are also shared over the entire bus. It is possible to operate a system
with two CPUs and only a pair of DIMMs in the H0 DIMM bank.
The Opteron does support 64-bit only operation, but due to the design of the DIMM banks,
the single DIMM must be inserted in either DIMM slot 0 or DIMM slot 2 to function. The
system will NOT boot otherwise.
The following is our recommended DIMM installation path based on the number of DIMMs
being installed (Remember to check that the DIMMS are 2.5V Registered ECC DDR PC2100/
PC2700/DDR266/DDR333 DIMMs and that they appear on the List of Recommended
Memory Modules):
If you have... You should install them in...
One (1) CPU (Installed in Socket CPU0)
1 DIMM H0 Bank: Slot 0 or Slot 2 (This only provides 64-bit memory access)
2 DIMMs H0 Bank: Slots 0/1 OR Slots 2/3
4 DIMMs H0 Bank: Slots 0,1,2,3 (Memory installed in H1 will NOT be recognized)
Two (2) CPUs
1 DIMM H0 Bank: Slot 0 or Slot 2 (This only provides 64-bit memory access)
2 DIMMs H0 Bank: Slots 0/1 OR Slots 2/3
4 DIMMs H0 Bank: Slots 0/1
H1 Bank: Slots 0/1
6 DIMMs H0 Bank: Slots 0,1,2,3
H1 Bank: Slots 0/1 OR Slots 2/3
8 DIMMs H0 Bank: Slots 0,1,2,3
H1 Bank: Slots 0,1,2,3
IMPORTANT
* If you only have one (1) processor, install ALL DIMMs into the H0 DIMM Bank.
* To ensure compatibility, only use DIMM pairs of the same exact type and size
and made by the same company. Refer to “Appendix A: Recommended Memory
Modules” for a list of supported DIMMS.

Serverboard Manual
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Hardware
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Hardware Install
Hardware
Install
INSTALLING THE PROCESSOR AND HEATSINK
The ServerBoard accommodates AMD® Opteron micro-PGA Socket 940 processors at
1600 MTs (MegaTransfers per second). You must rst insert a CPU into CPU socket 0
(CPU0) before installing one in CPU socket 1 (CPU1).
Processor (CPU) Installation
This section outlines how to install a CPU into the ServerBoard
1. Locate Pin 1 on the CPU socket and Pin 1 on the CPU itself.
2. Lift up the lever on the CPU Socket 940. Then line up Pin 1 on the CPU with the
Pin 1 marking on the socket before inserting the CPU into the Socket 940. Check
that the CPU is ush in the socket, and lower the lever to lock the CPU in place.
3. Apply Thermal Compound (Thermal grease) to the top of the CPU.
4. Mount the Heatsink on top of the installed CPU by attaching it to the
motherboard with the included screws (rst on one side, then the other).
Pin1 Pin 1 of
CPU is
lined up
with Pin1
of Socket.