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, modied or altered, unless
such repair, modication 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 identication or explanation and to the
owners’ benet, without intent to infringe.
ii
Contents
Notices ........................................................................................................ vii
Safety information .................................................................................... viii
About this guide ......................................................................................... ix
Typography .................................................................................................. x
DSBV-D specications summary .............................................................. xi
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 modications
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.
vii
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 x it by yourself. Contact a
qualied 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 qualied
service technician or your retailer.
viii
About this guide
This user guide contains the information you need when installing and conguring
the motherboard.
How this guide is organized
This user guide contains the following parts:
• Chapter 1: Product introduction
This chapter describes the features of the motherboard and the new
technologies 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 ways of shutting down
the system.
• 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: RAID conguration
This chapter provides instructions for setting up, creating, and conguring
RAID sets using the available utilities.
• Chapter 6: Driver installation
This chapter provides instructions for installing the necessary drivers for
different system components.
• Appendix: Reference information
This appendix includes additional information that you may refer to when
conguring the motherboard.
Where to nd more information
Refer to the following sources for additional information and for product and
software updates.
1. ASUS websites
The ASUS website provides 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
yers, that may have been added by your dealer. These documents are not
part of the standard package.
ix
Conventions used in this guide
To make sure that you perform certain tasks properly, take note of the following
symbols used throughout this manual.
DANGER/WARNING
when trying to complete a task.
CAUTION
when trying to complete a task.
IMPORTANT
task.
NOTE:
task.
: Information to prevent damage to the components
: Instructions that you MUST follow to complete a
Tips and additional information to help you complete a
: Information to prevent injury to yourself
Typography
Bold text Indicates a menu or an item to select.
Italics Used to emphasize a word or a phrase.
<Key> Keys enclosed in the less-than and greater than sign means that you must press the
enclosed key.
Example: <Enter> means that you must press
the Enter or Return key.
<Key1+Key2+Key3> If you must press two or more keys
simultaneously, the key names are linked with
a plus sign (+).
Example: <Ctrl+Alt+D>
Command
exactly as shown, then supply the required
item or value enclosed in brackets.
Example: At the DOS prompt, type the
command line:
Means that you must type the command
format A:/S
x
DSBV-D specications summary
CPU
Chipset
Front Side Bus
Memory
Expansion slots
Storage
Discrete graphics
LAN
Dual LGA771 sockets for Intel® Xeon™ Dual Core processors
support H.T.; 5100/5300 series DO NOT support H.T.)
MCH : Intel® 5000V
ICH : Intel® 6321ESB
1333/1066/667 MHz
Dual-channel memory architecture
6 x 240-pin FB-DIMM sockets support registered ECC
fully buffered DDR2-533/DDR2-667 memory modules
with Advanced Memory Buffer (AMB chip)
Supports 256 MB up to 24 GB system memory
1 x PCI Express™ x16 slot (x8 link)
1 x PCI Express™ x8 slot (x4 link)
3 x PCI-X 133/100 MHz
1 x PCI 33 MHz/32-bit/5V slot
1 x DDR2 SO-DIMM socket for ASUS server management
board 3 series (ASMB3)
Intel® 6321ESB supports:
- 1 x Ultra DMA 100/66/33 channel
- 6 x SATA II (300 MB/s)
- Intel® Matrix Storage with RAID 0, RAID 1, RAID
0+1, and RAID 5 conguration
- LSI MegaRAID controller with RAID 0, RAID 1, and
RAID 0+1 conguration
1 x PS/2 keyboard port (purple)
1 x PS/2 mouse port (green)
2 x USB 2.0 ports
1 x Serial port
1 x VGA port
2 x LAN (RJ-45) ports
1 x Floppy disk drive connector
1 x IDE connector
6 x Serial ATA connectors
1 x Hard disk activity LED connector (4-pin HDLED1)
1 x USB connector (10-1 pin USB34)
1 x Serial port connector (10-1 pin COM2)
1 x Power supply SMBus connector (5-pin PSUMB1)
1 x Parallel port connector (26-1 pin LPT1)
1 x System panel connector (20-1 pin PANEL1)1 x Auxiliary panel connector (20-2 pin AUX-PANEL1)
SSI power connectors (24-pin, 8-pin, and 4-pin)CPU (x2), rear (x2), front (x4), and FB-DIMM (x1) fan
connectors
SSI power supply (with 24-pin/4-pin/8-pin 12V plugs)
for LGA771-socket Intel® Xeon Dual Core processors
(Bensley-VS platform)
SSI CEB form factor: 12 in x 10.5 in (30.5 cm x 26.7 cm)
Device drivers
ASUS Update Utility
ASUS Server Web-based Management (ASWM)
ADOBE Acrobat Reader
ASUS Screen Saver
ASUS Flash utility under DOS
*Specications are subject to change without notice.
xii
This chapter describes the motherboard
features and the new technologies
it supports.
1.3 Serial number label ......................................................................
1.4 Special features ............................................................................
1-1
1-1
1-2
ASUS DSBV-D
1.1 Welcome!
Thank you for buying an ASUS® DSBV-D motherboard!
The motherboard 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.
1.2 Package contents
Check your motherboard package for the following items.
Cables
Accessories
Application CDs Support CD11
DocumentationUser Guide11
Packing Qty.3pcs per Caton10pcs per Carton
SATA Signal Cable6-SATA Power Cable3-2-in-1 (IDE&Floppy) Cable Set1-IO Shield11
CEK Spring22
If any of the above items is damaged or missing, contact your retailer.
DSBV-D Retail Pack DSBV-D Bulk Pack
1.3 Serial number label
Before requesting support from the ASUS Technical Support team, you must
take note of the motherboard’s serial number containing 12 characters such as
xxM0Axxxxxxx. See the gure below.
With the correct serial number of the product, ASUS Technical Support team
members can then offer a quicker and satisfying solution to your problems.
DSBV-D
xxM0Axxxxxxx
ASUS DSBV-D1-1
1.4 Special features
1.4.1 Product highlights
Latest processor technology
The motherboard comes with two LGA-771 sockets that support Dual-Core
Intel® Xeon™ processors with 1333/1066/667 MHz Front Side Bus (FSB).
Dual-core processors contain two physical CPU cores to meet demands for
more powerful processing. Intel® Xeon™ processors incorporate the Intel®
Hyper-Threading Technology and Extended Memory 64-bit Technology (EM64T).
The EM64T enables the support for 64-bit operation system, such as 64-bit
Windows® and Linux. See page 2-9 for details.
Intel®
5000V
and Intel® 6321ESB chipset
The Intel® 5000V Memory Controller Hub (MCH) and the Intel® 6321ESB provide
the vital interfaces for the motherboard.
The MCH provides the processor, dual-channel FB-DIMM memory support, and
PCI Express interfaces. The Intel® 6321ESB is a new generation server class I/O
controller hub that provides the interface for PCI 2.3, PCI Express, and PCIX.
Intel® EM64T
The motherboard supports Intel® processors with the Intel® EM64T (Extended
Memory 64 Technology). The Intel® EM64T feature allows your computer to run on
64-bit operating systems and access larger amounts of system memory for faster
and more efcient computing.
Enhanced Intel SpeedStep® Technology (EIST)
The Enhanced Intel SpeedStep® Technology (EIST) intelligently manages the
CPU resources by automatically adjusting the CPU voltage and core frequency
depending on the CPU loading and system speed or power requirement.
FB-DIMM memory support
This motherboard supports fully buffered DIMMs (FB-DIMMs), the latest memory
solution that extends memory capacity and provide high-speed, high-density
system memory peformance. FB-DIMMs use Advanced Memory Buffer (AMB)
chips that transmit signals between the memory modules and controllers with
improved signal integrity and reduced errors. See page 2-14 for details.
1-2Chapter 1: Product introduction
PCI Express™ interface
The motherboard fully supports PCI Express, the latest I/O interconnect technology
that speeds up the PCI bus. PCI Express features point-to-point serial
interconnections between devices and allows higher clockspeeds by carrying data
in packets. This high speed interface is software compatible with existing PCI or
PCI-X specications. See page 2-22 for details.
82563 LAN solution
The motherboard comes with a dual-port 82563EB network connection to provide a
total solution for your networking needs. See page 2-29 for the location of the LAN
ports. See section
2.6 Jumpers
for details on Gigabit LAN settings.
Serial ATA II technology
The motherboard supports the Serial ATA II 3 Gb/s technology through 6321ESB
Serial ATA interfaces. The Serial ATA II specication provides twice the bandwidth
of the current Serial ATA products with a host of new features, including Native
Command Queuing (NCQ), Power Management (PM) Implementation Algorithm,
and Hot Swap. Serial ATA allows thinner, more exible cables with lower pin count
and reduced voltage requirements. See page 2-31 for details.
USB 2.0 technology
The motherboard implements the Universal Serial Bus (USB) 2.0 specication,
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.
See pages 2-29 and 2-32 for details.
Temperature, fan, and voltage monitoring
The CPU temperature is monitored by the W83793G chip to prevent overheating
and damage. The system fan rotations per minute (RPM) is monitored for timely
failure detection. The chip monitors the voltage levels to ensure stable supply of
current for critical components. See page 4-29 for details.
Intel® IOAT
Intel® I/O Acceleration Technology (IOAT) is an integrated server platform I/O
solution that addresses all segments of the server I/O bottleneck problem using
TCP/IP without requiring any modication of existing or future applications.
Intel® IOAT is a system-wide solution that increases CPU efciency and delivers
data to/from applications faster than current server platforms.
ASUS DSBV-D1-3
1.4.2 Innovative ASUS features
CrashFree BIOS 2
This feature allows you to restore the original BIOS data from the support CD in
case when the BIOS codes and data are corrupted. This protection eliminates the
need to buy a replacement ROM chip. See page 4-3 for details.
ASUS Smart Fan technology
The ASUS Smart Fan technology smartly adjusts the fan speeds according to the
system loading to ensure quiet, cool, and efcient operation.
See page 4-31 for details.
ASUS MemCool FB-DIMM Fan Kit (optional)
With this optional fan kit, the platform gets optimal performance and the best
possible FB-DIMM thermal environment.
1-4Chapter 1: Product introduction
This chapter lists the hardware setup
procedures that you have to perform
when installing system components. It
includes description of the jumpers and
connectors on the motherboard.
Hardware
information
2
Chapter summary
2
2.1 Before you proceed ..................................................................... 2-1
Take note of the following precautions before you install motherboard components
or change any motherboard settings.
• Unplug the power cord from the wall socket before touching any
component.
• Use a grounded wrist strap or touch a safely grounded object or
• Hold components by the edges to avoid touching the ICs on them.
• Whenever you uninstall any component, place it on a grounded
• Before you install or remove any component, ensure
Onboard LED
a metal object, such as the power supply case, before handling
components to avoid damaging them due to static electricity.
antistatic pad or in the bag that came with the component.
that the 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.
ASUS DSBV-D 2-1
2.2 Motherboard overview
DSBV-D
Before you install the motherboard, study the conguration of your chassis to
ensure that the motherboard ts into it.
To optimize the motherboard features, we highly recommend that you install it in an
SSI EEB 3.61 compliant chassis.
Make sure to unplug the chassis power cord before installing or removing
the motherboard. Failure to do so can cause you physical injury and damage
motherboard components!
2.2.1 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.
2.2.2 Screw holes
Place six (6) screws into the holes indicated by circles to secure the motherboard
to the chassis.
Do not overtighten the screws! Doing so can damage the motherboard.
Place this side towards
the rear of the chassis
2-2Chapter 2: Hardware information
2.2.3 Support kits for the motherboard
For additional protection from motherboard breakage due to the weight of the CPU
heatsinks, your motherboard package comes with CEK springs that you can use as
weight support. Install the CEK springs before installing the motherboard.
If your chassis is SSI EEB 3.61 compliant, we recommend that you use the CEK
springs; otherwise, use the support plates kit.
Each CEK spring has four hooks to match the
designated holes around the CPU area.
Hook
To install the CEK spring:
1. Locate the CPU heatsink holes on
the motherboard.
Socket for CPU2
Socket for CPU1
Heatsink hole
2. Position the CEK spring underneath
the motherboard, then match the
CEK spring hooks to the CPU1
heatsink holes.
ASUS DSBV-D 2-3
3. Press the upper spring hooks
inward, then insert to the upper
CPU heatsink holes until they snap
in place.
4. Press the lower spring clips inward,
then insert to the lower CPU
heatsink holes until they snap in
place.
5. If you installed a second CPU,
repeat steps 2 to 4 to install the
CEK spring to the CPU2 heatsink
holes.
The CEK springs appear as shown
when installed.
CEK spring screw hole
2-4Chapter 2: Hardware information
6. Before installing the motherboard
into the chassis, locate the standoffs
that should match the eight (8) CEK
spring screw holes.
Standoffs for CPU1
7. Install the motherboard with the
external I/O ports toward the
chassis rear panel. The CPU
sockets should be right on top of
their respective standoffs.
Standoffs for CPU2
Socket for CPU2
Socket for CPU1
Make sure that the standoffs perfectly match the CEK spring screw holes;
otherwise, you can not install the CPU heatsinks properly.
8. Secure the motherboard with six (6) screws. Refer to section “2.2.2 Screw
holes” for illustration.
ASUS DSBV-D 2-5
2.2.4 Motherboard layouts
8Mb
FWH
KBPWR1
ATXPWR1
FLOPPY1
ATI
ES1000
BUZZER1
COM2
Super
I/O
CR2032 3V
Lithium Cell
CMOS Power
PANEL1
PS/2
T: Mouse
B: Keyboard
USB1
USB2
RJ-45
(LAN1)
ATX12V1
CPU_FAN1
Intel
®
6321ESB
PSUSMB1
BPSMB1
AUX_PANEL1
HDLED1
USB34
USBPW34
LAN_BW1
LPT1
USBPW12
DSBV-D
ASMB3
Intel
®
5000V
PCIE1
FB-DIMM_00 (64/72 bit, 240-pin module)
26.7cm (10.5in)
30.5cm (12in)
COM1
VGA1
PCIE2
PCIX5
PCIX4
PCI3
PCIX6
REAR_FAN2
ATX12V2
PRI_IDE1
FRNT_FAN2
SATA2
SATA1
SGIOP1
RECOVERY1
VGA_EN1
LAN_EN1
DIP_SW1
RJ-45
(LAN2)
FB-DIMM_01 (64/72 bit, 240-pin module)
FB-DIMM_02 (64/72 bit, 240-pin module)
FB-DIMM_10 (64/72 bit, 240-pin module)
FB-DIMM_11 (64/72 bit, 240-pin module)
FB-DIMM_12 (64/72 bit, 240-pin module)
CPU1
CPU2
FRNT_FAN1
FRNT_FAN4
FRNT_FAN3
CPU_FAN2
REAR_FAN1
CLRTC1
FBD_FAN1
RAID_SEL1
SATA4
SATA3
SATA6
SATA5
Intel
®
82563EB
+12V4LED1
SB_PWR1
DSBV-D
2-6Chapter 2: Hardware information
2.2.5 Layout contents
Slots/Sockets Page
1. CPU sockets 2-9
2. FB-DIMM sockets 2-14
3. PCI-X slots 2-22
4. DDR2 SODIMM socket 2-22
5. PCI Express x8 slot 2-23
6. PCI Express x16 slot 2-23
Jumpers Page
1. Clear RTC RAM (CLRTC1) 2-24
2. LAN bandwidth setting (3-pin LAN_BW1) 2-25
3. USB device wake-up (3-pin USBPW12, USBPW34) 2-25
4. Keyboard power (3-pin KBPWR1) 2-26
5. VGA controller setting (3-pin VGA_EN1) 2-26
6. LAN controller setting (3-pin LAN1_EN1) 2-27
7. Intel® 6321ESB SATA port S/W RAID setting (3-pin RAID_SEL1) 2-27
8. Force BIOS recovery setting (3-pin RECOVERY1) 2-28
SwitchPage
1. DIP switches (DIP_SW1)2-33
Rear panel connectors Page
1. PS/2 mouse port (green) 2-29
2. PS/2 keyboard port (purple) 2-29
3. USB 2.0 ports 1 and 2 2-29
4. Serial (COM1) port 2-29
5. Video Graphics Adapter port 2-29
6. LAN (RJ-45) ports 2-29
ASUS DSBV-D 2-7
Internal connectors Page
1. Floppy disk drive connector (34-1 pin FLOPPY1) 2-30
2. IDE connector (40-1 pin PRI_IDE) 2-30
3. Serial ATA connectors (7-pin SATA1, SATA2, SATA3, 2-31
SATA4, SATA5, SATA6 )
4. Hard disk activity LED connector (4-pin HDLED1) 2-31
5. USB connector (10-1 pin USB34) 2-32
6. Serial port connector (10-1 pin COM2) 2-32
7. CPU and system fan connectors (4-pin CPU_FAN1/2, 2-33
REAR_FAN1/2, FRNT_FAN1/2/3/4, FBD_FAN1)
8. Power supply SMBus connector (5-pin PSUSMB1) 2-33
12. Serial General Purpose Input/Output connector 2-36
13. System panel connector (20-1 pin PANEL1) 2-40
14. System panel auxiliary connector (20-2 pin AUX_PANEL1) 2-38
2-8Chapter 2: Hardware information
2.3 Central Processing Unit (CPU)
DSBV-D
DSBV-D CPU LGA771
CPU1
CPU2
The motherboard comes with a surface mount LGA771 socket designed for the
Intel® Xeon® Dual Core processor.
• Your boxed Intel® Xeon® LGA771 processor package should
come with installation instructions for the CPU and heatsink. If the
instructions in this section do not match the CPU documentation, follow the
latter.
•
Upon purchase of the motherboard, make sure that the PnP cap is on
the socket and the socket contacts are not bent. Contact your retailer
immediately if the PnP cap is missing, or if you see any damage to the PnP
cap/socket contacts/motherboard components. ASUS will shoulder the cost
of repair only if the damage is shipment/transit-related.
•
Keep the cap after installing the motherboard. ASUS will process Return
Merchandise Authorization (RMA) requests only if the motherboard comes
with the cap on the LGA771 socket.
• The product warranty does not cover damage to the socket contacts
resulting from incorrect CPU installation/removal, or misplacement/loss/
incorrect removal of the PnP cap.
2.3.1 Installing the CPU
To install a CPU:
1. Locate the CPU socket on the motherboard.
ASUS DSBV-D 2-9
Before installing the CPU, make sure that the socket box is facing towards you
and the load lever is on your left.
2. Press the load lever with your thumb (A), then move it to the left (B) until it is
released from the retention tab.
Retention tab
A
Load lever
B
To prevent damage to the socket pins, do not remove the PnP cap unless you
are installing a CPU.
3. Lift the load lever in the direction of
the arrow to a 135º angle.
4. Lift the load plate with your
thumb and forenger to a 100º
angle (A), then push the PnP
cap from the load plate window
to remove (B).
PnP cap
This side of the socket box
should face you.
B
A
Load plate
5. Position the CPU over
the socket, making sure
that the gold triangle
is on the bottom-left
corner of the socket.
The socket alignment
key should t into the
Alignment key
CPU notch.
Gold triangle mark
2-10Chapter 2: Hardware information
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