-001 First release of the Intel® Desktop Board D845PESV Product Guide. July 2002
-002 Second release of the Intel Desktop Board D845PESV Produc t Guide. August 2002
If an FCC declaration of conformity marking is present on the board, the following statem ent applies:
FCC Declaration of Conformity
This device complies wi th Part 15 of the FCC Rules. Operation i s subject to the followi ng two conditions: (1) this device
may not cause harmful interference, and (2) this devic e m ust accept any interf erence received, including int erf erence that
may cause undesired operation.
For questions related to the EM C performance of this product, contact:
Intel Corporation
5200 N.E. Elam Young Parkway
Hillsboro, OR 97124
1-800-628-8686
This equipment has been tested and found to comply with the limits for a Class B digi tal device, pursuant to Part 15 of the
FCC Rules. These limits are designed to provide reasonable protecti on agai nst harmful interference in a res i dential
installation. This equi pm ent generates, uses, and can radiate radio frequency energy and, if not i nstalled and used in
accordance with the inst ructions, may cause harmful interference to radio com m uni cations. 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, whi ch can be determined by turning the equipm ent off and on, the user is encouraged t o try to correct
the interference by one or more of t he f ollowing measures:
• Reorient or relocate the receivi ng antenna.
• Increase the separation between t he equi pm ent and the receiver.
• Connect the equipment to an outlet on a circuit other than the one to which the receiver is connected.
• Consult the dealer or an experienced radio/ TV technician for help.
Canadian Department of Communications Compliance Statement
This digital apparatus does not exceed the Class B limits for radio noise emissi ons from digital apparatus set out in the
Radio Interference Regulations of the Canadian Department of Communications.
Le présent appareil numerique német pas de bruit s radioélectriques dépassant l es limites applicables aux appareils
numériques de la classe B prescrites dans le Réglement s u r l e broul l age radi oél ectrique édicté par le minist ére des
Communications du Canada.
Disclaimer
Information in this document is provided in connection with I nt el® products. No license, express or implied, by es t oppel or
otherwise, to any intell ectual property rights is granted by this document. E xcept as provided in Intel’ s Terms and
Conditions of Sale for such products, Intel assumes no liability whatsoever, and Intel disclaims any express or implied
warranty, relating to sale and/or use of Intel products including liability or warrant ies relating to fitness for a parti cular
purpose, merchantability, or infringement of any patent, copyright or other intellectual property right. Intel product s are not
intended for use in medical, l i fe saving, or life sustaining applications. Intel may make changes to s pecifications and
product descriptions at any time, without notic e.
Desktop Board D845PESV may contain design defect s or errors known as errata which may cause t he product to deviate
from published specifi cations. Current characteri zed errata are available on request.
Contact your local Int el sales office or your dis t ri butor to obtain the latest s pecifications and before plac i ng your product
order.
Copies of documents which have an ordering number and are referenced in this document, or other Intel literat ure, may be
obtained from Intel Corporation by going to the World Wide Web site at: http://www.intel.com/ or by calling
1-800-548-4725.
Intel, Pentium, and Celeron are regi stered trademarks of Intel Corporation or its subsidiaries i n the United States and other
countries.
†
Other names and brands may be claim ed as the property of others.
Table 1 describes the major features of Intel® Desktop Board D845PESV.
Table 1. Feature Summary
Form Factor
Processor
Memory
Chipset
I/O Control
Audio
LAN (optional)
• ATX at 12.0 inches by 8.2 inches
Support for:
• 533/400 MHz front side bus (FSB) Intel
mPGA-478 socket
• 400 MHz FSB Intel
®
Celeron® processor in an mPGA-478 socket
• Up to two 184-pin Double Data Rate (DDR) SDRAM Dual Inline Memory
Modules (DIMMs) with gold-plated contacts. Supported memory
configuration are:
— DDR333: to run DDR333 memory at full speed requires an Intel
Pentium 4 processor with 533 MHz front side bus frequency (FSB)
— DDR333 memory will run only at DDR266 speeds when using a
processor with 400 MHz FSB
— DDR266: requires an Intel Pentium 4 processor with
533/400 MHz FSB, or Intel Celeron processor with 400 MHz FSB
— DDR200: requires an Intel Pentium 4 or Intel Celeron processor with
400 MHz FSB
• Unbuffered and non-registered single or double-sided DIMMs
• Serial Presence Detect (SPD) memory only
• Non-ECC RAM (ECC memory will run in non-ECC mode)
• 2.5 V memory
NOTE: Desktop Board D845PESV has been designed to support DI MMs based on
512 Mbit technology up to 2 GB, but this technology has not been validated on this I ntel
desktop board. For more information about the latest list of tested memory, refer to the
Intel World Wide Web site at:
82845PE Memory Controller Hub (MCH) with Accelerated Hub
Architecture (AHA) bus
®
• Intel
82801DB I/O Controller Hub (ICH4) with support for up to six
Hi-Speed Universal Serial Bus 2.0 (USB 2.0) ports
• 4 Mbit Firmware Hub (FWH)
Support for:
• SMSC LPC47M172
• National Semiconductor PC87372
• Intel 845PE chipset (AC ’97)
• Analog Devices Inc. audio codec
®
• Intel
82562ET 10/100 Mbit/sec Platform LAN Connect (PLC) device and
RJ-45 connector
®
Pentium® 4 processor in an
®
continued
7
Intel Desktop Board D845PESV Product Guide
Table 1. Feature Summary (continued)
Peripheral Interfaces
Expansion Capabilities
BIOS
Power Management
Hardware Management
• Up to six USB 2.0 ports
— Four ports routed to the back panel
— Two ports routed to the front panel USB header
• Two IDE interfaces with Ultra DMA-33 and ATA-66/100 support
• One diskette drive interface
• One parallel port
• One serial port
• PS/2
• Intel/AMI BIOS
• 4 Mbit symmetrical flash memory
• Support for SMBIOS
• Support for Advanced Configuration and Power Interface (ACPI)
• Suspend to RAM (STR) support
• Wake on USB, PCI, RS-232, PS/2, LAN, and front panel
Hardware monitor with:
• Three fan sensing inputs used to monitor fan activity
• Remote diode temperature sensing
• Intel
• Voltage sensing to detect out of range values
†
keyboard and mouse ports
— Six PCI bus add-in card connectors
— One AGP connector
®
Precision Cooling fan speed control that automatically adjusts chassis
fan speeds based on system temperature
NOTE
✏
For information about Intel desktop boards, including technical product specifications, BIOS
updates, and device drivers, go to the Intel World Wide Web site at:
Figure 1 shows the location of the major components on Desktop Board D845PESV.
Desktop Board Features
A
BC
D
E
F
G
H
BB
I
AA
Z
J
Y
K
X
OM14703
L
W
U
S
R
V
A Audio codec O Secondary IDE connector
B Front panel audio header P Primary IDE connector
C Auxiliary line-in connector (ATAPI) Q Speaker
D Rear chassis fan connector (fan speed control) R Battery
E CD-ROM connector (ATAPI) S SCSI hard drive activity LED connector
F Back panel connectors T Chassis intrusion connector
G 12 V processor core voltage connector U Front chassis fan connector (fan speed
H Intel 82845PE MCH V BIOS configuration jumper
I Processor socket W Alternate power/sleep LED header
J Processor fan connector X Front panel header
K DIMM sockets Y Intel
L I/O controller Z Front panel USB 2.0 header
M Main power connector AA AGP connector
N Diskette drive connector BB PCI bus add-in card connectors
T
PQ
O
control)
®
ICH4
N
M
Figure 1. Desktop Board D845PESV Components
9
Intel Desktop Board D845PESV Product Guide
Processor
CAUTION
Failure to use an ATX12V power supply, or not connecting the additional power supply lead to
Desktop Board D845PESV may result in damage to the desktop board and/or power supply.
Desktop Board D845PESV supports a single Intel Pentium 4 processor or Intel Celeron processor.
Processors are not included with the desktop board and must be purchased separately.
The processor connects to the Intel desktop board through the mPGA478-pin socket. The Intel
Pentium 4 processor and Intel Celeron processor may be removed and replaced to accommodate
supported higher speed processors.
Desktop Board D845PESV supports the processors listed in Table 2.
Table 2. Supported Processors
Type
on .13 micron process in an
mPGA478 package
Intel Pentium 4 processor
on .18 micron process in an
mPGA478 package
®
Celeron
Intel
an mPGA478 package
®
processor in
For the latest information on processor support for Desktop Board D845PESV, refer to the Intel
World Wide Web site at:
For instructions on installing or upgrading the processor, see Chapter 2 on page 21.
Desktop Board D845PESV requires an ATX12V compliant power supply to function according to
desktop board specifications. The desktop board has two ATX12V compliant power supply
connectors that are needed to provide extra power to the Intel 845PE chipset and Intel Pentium 4
processor or Intel Celeron processor.
Figure 11 on page 33 shows the two power connector locations.
10
Desktop Board Features
Main Memory
NOTE
✏
To be fully compliant with all applicable Intel® SDRAM memory specifications, the board should
be populated with DIMMs that support the Serial Presence Detect (SPD) data structure. If your
memory modules do not support SPD, you will see a notification to this effect on the screen at
power up. The BIOS will attempt to configure the memory controller for normal operation.
Desktop Board D845PESV supports system memory as defined below:
• Up to two 184-pin Double Data Rate (DDR) SDRAM Dual Inline Memory Modules (DIMMs)
with gold-plated contacts. Supported memory configuration are:
— DDR333: to run DDR333 memory at full speed requires an Intel Pentium 4 processor with
533 MHz front side bus frequency (FSB)
— DDR333 memory will run only at DDR266 speeds when using a processor with 400 MHz
FSB
— DDR266: requires an Intel Pentium 4 processor with
533/400 MHz FSB, or Intel Celeron processor with 400 MHz FSB
— DDR200: requires an Intel Pentium 4 or Intel Celeron processor with 400 MHz FSB
• Unbuffered and non-registered single or double-sided DIMMs
• Serial Presence Detect (SPD) memory only
• Non-ECC RAM (ECC memory will run in non-ECC mode)
• 2.5 V memory
• 64 Mbit, 128 Mbit, 256 Mbit, and 512 Mbit technologies for the following memory
Desktop Board D845PESV has been designed to support DIMMs based on 512 Mbit technology up
to 2 GB, but this technology has not been validated on this Intel desktop board. For more
information about the latest list of tested memory, refer to the Intel World Wide Web site at:
http://support.intel.com/support/motherboards/desktop/
All memory components and DIMMs used with the desktop board must comply with the
PC SDRAM specifications. You can access these documents through the World Wide Web at:
http://www.intel.com/technology/memory/pcsdram/spec/
For information about installing memory, see Chapter 2 starting on page 21.
11
Intel Desktop Board D845PESV Product Guide
Intel® 845PE Chipset
The Intel 845PE chipset consists of the following devices:
• Intel 82845PE Memory Controller Hub (MCH) with AHA bus
• Intel 82801DB I/O Controller Hub (ICH4) with AHA bus
• Firmware Hub (FWH)
Intel® 82845PE Memory Controller Hub (MCH)
The MCH provides the processor, system memory, AGP, and hub interfaces in the
Intel 845PE chipset platform. Features on Desktop Board D845PESV include:
• Single processor support with 533 MHz or 400 MHz data transfer rates
• Support for up to 2 GB (with 512 Mbit technology) DDR-SDRAM at 333/266/200 MHz
operation
NOTE
✏
512 Mbit technology has not been validated on these boards
• 1.5 V AGP interface with 4X Side Band Addressing (SBA)/data transfer and 2X and 4X
fast write
Intel® 82801DB I/O Controller Hub (ICH4)
The ICH4 integrates many I/O functions and provides the I/O subsystem with access to the rest of
the platform. ICH4 features on Desktop Board D845PESV include:
• Integrated IDE controller supports two Ultra DMA-33 and ATA-66/100 channels, and PIO
modes
• SMBus interface
• FWH interface
• Low Pin Count (LPC) interface
• AC ’97 2.1 compliant link for audio and telephony codecs
• Integrated Intel 82562ET 10/100 Mbit/sec Platform LAN Connect (PLC) device for interfacing
the ICH4 LAN connect interface to LAN connect component
• Three UHCI and one EHCI compliant host controllers with support for up to six USB ports
Firmware Hub (FWH)
The 4 Mbit Firmware Hub has these features:
• System BIOS
• System security and management logic
12
Desktop Board Features
Input/Output (I/O) Controller
The SMSC LPC47M172 or National Semiconductor PC87372 super I/O controllers feature the
following:
• Low pin count (LPC) interface
• Two serial ports (one via a board connector)
• One parallel port with Extended Capabilities Port (ECP) and Enhanced Parallel Port
(EPP) support
• Serial IRQ interface compatible with serialized IRQ support for PCI systems
• PS/2-style mouse and keyboard interfaces
• Interface for one 1.2 MB, 1.44 MB, or 2.88 MB diskette drive
• Intelligent power management, including a programmable wake up event interface
• PCI power management support
• Two fan tachometer inputs
Audio Subsystem
The audio subsystem features the following:
• Intel 845PE chipset (AC ’97)
• Analog Devices Inc. AD1981B audio codec
NOTE
✏
The line out connector, located on the back panel, is designed to power either headphones or
amplified speakers only. Poor audio quality may occur if passive (non-amplified) speakers are
connected to this output.
Audio drivers and utilities are available from Intel’s World Wide Web site:
The optional Intel 82562ET (with the Intel 82801DB ICH4) provides a Fast PCI LAN subsystem
providing both 10Base-T and 100Base-TX connectivity. The Intel 82562ET provides the
following functions:
• Basic 10/100 Ethernet LAN connectivity
• Supports RJ-45 connector with status indicator LEDs
• Programmable transit threshold
• Configurable EEPROM that contains the MAC address
LAN Subsystem Software
For LAN software and drivers, refer to the D845PESV link on Intel’s World Wide Web site at:
Two LEDs are built into the RJ-45 LAN connector. Table 3 describes the LED states when the
board is powered up and the LAN subsystem is operating.
Table 3. RJ-45 LAN Connector LEDs
LED Color LED State Indicates
Off 10 Mbit/sec data rate is selected. Green
On 100 Mbit/sec data rate is selected.
Yellow
Off LAN link is not established.
On (steady state) LAN link is established.
On (brighter and pulsing) The computer is communicating with another computer on the
LAN.
Hi-Speed USB 2.0 Support
NOTE
✏
Computer systems that have an unshielded cable attached to a USB port might not meet FCC
Class B requirements, even if no device or a low-speed USB device is attached to the cable. Use a
shielded cable that meets the requirements for a full-speed USB device.
This Intel desktop board supports up to six USB 2.0 ports via ICH4; four ports routed to the back
panel and two routed to a USB front panel header. USB 2.0 ports are backward compatible with
USB 1.1 devices. USB 1.1 devices will function normally at USB 1.1 speeds.
USB 2.0 support requires both an operating system and drivers that fully support USB 2.0 transfer
rates. Disabling Hi-Speed USB in BIOS reverts all USB 2.0 ports to USB 1.1 operation. This may
be required to accommodate operating systems that do not support USB 2.0.
NOTE
✏
USB devices are limited to USB 1.1 transfer rates prior to operating system and driver
initialization.
Enhanced IDE Interface
The ICH4’s IDE interface handles the exchange of information between the processor and
†
peripheral devices like hard disks, CD-ROM drives, and Iomega Zip
The interface supports:
• Up to four IDE devices (such as hard drives)
• ATAPI devices (such as CD-ROM drives)
• Older PIO Mode devices
• Ultra DMA-33 and ATA-66/100 protocols
• Laser servo (LS-120) drives
drives inside the computer.
14
Desktop Board Features
Expansion Slots
Desktop Board D845PESV has the following add-in card connectors:
• Six PCI bus add-in card connectors (SMBus routed to PCI bus connector 2)
• One AGP connector
Accelerated Graphics Port (AGP)
NOTE
✏
Desktop Board D845PESV is only compatible with 1.5 V AGP cards.
AGP is a high-performance interface for graphics-intensive applications, such as 3D graphics.
AGP is independent of the PCI bus and is intended for exclusive use with graphical
display devices.
The AGP connector supports 1.5 V AGP 4X and 2X add-in cards.
BIOS
The BIOS provides the Power-On Self-Test (POST), the BIOS Setup program, the PCI and IDE
auto-configuration utilities, and the video BIOS. The BIOS is stored in the Firmware Hub.
The BIOS can be updated by following the instructions in Chapter 3 on page 39.
PCI Auto Configuration
If you install a PCI add-in card in your computer, the PCI auto-configuration utility in the BIOS
automatically detects and configures the resources (IRQs, DMA channels, and I/O space) for that
add-in card. You do not need to run the BIOS Setup program after you install a PCI add-in card.
IDE Auto Configuration
If you install an IDE device (such as a hard drive) in your computer, the IDE auto-configuration
utility in the BIOS automatically detects and configures the device for your computer. You do not
need to run the BIOS Setup program after installing an IDE device. You can override the autoconfiguration options by specifying manual configuration in the BIOS Setup program.
To use ATA-66/100 features, the following items are required:
• An ATA-66/100 peripheral device
• An ATA-66/100 compatible cable
• ATA-66/100 operating system device drivers
15
Intel Desktop Board D845PESV Product Guide
Security Passwords
The BIOS includes security features that restrict whether the BIOS Setup program can be accessed
and who can boot the computer. A supervisor password and a user password can be set for the
Setup and for booting the computer, with the following restrictions:
• The supervisor password gives unrestricted access to view and change all Setup options. If
only the supervisor password is set, pressing <Enter> at the password prompt of Setup gives
the user restricted access to Setup.
• If both the supervisor and user passwords are set, you must enter either the supervisor
password or the user password to access Setup. Setup options are then available for viewing
and changing depending on whether the supervisor or user password was entered.
• Setting a user password restricts who can boot the computer. The password prompt is
displayed before the computer is booted. If only the supervisor password is set, the computer
boots without asking for a password. If both passwords are set, you can enter either password
to boot the computer.
Power Management Features
Power management is implemented at several levels, including:
• Advanced Configuration and Power Interface (ACPI)
• Suspend to RAM (Instantly Available PC technology)
ACPI
ACPI gives the operating system direct control over the power management and Plug & Play
functions of a computer. The use of ACPI with Desktop Board D845PESV requires an operating
system that provides full ACPI support.
Suspend to RAM (Instantly Available PC Technology)
CAUTION
For Instantly Available PC technology, the 5 V standby line for the power supply must be capable
of delivering adequate +5 V standby current. Failure to provide adequate standby current when
using this feature can damage the power supply and/or effect ACPI S3 sleep state functionality.
Instantly Available technology enables the board to enter the ACPI S3 (Suspend-to-RAM) sleep
state. While in the S3 sleep state, the computer will appear to be off. When signaled by a wake-up
device or event, the system quickly returns to its last known awake state.
The Intel desktop board’s standby power indicator, shown in Figure 2, is lit when there is standby
power to the system. This includes the memory modules and PCI bus connectors, even when the
computer appears to be off.
If the system has a dual-colored power LED on the front panel, the sleep state is indicated by the
LED turning amber.
16
CR8H1
OM14704
Figure 2. Location of Standby Power Indicator
Desktop Board Features
CAUTION
Power supplies used with this board must be able to provide enough standby current to support the
standard Instantly Available (ACPI S3 sleep state) configuration. If the standby current necessary
to support multiple wake events from the PCI and/or USB buses exceeds power supply capacity,
the Intel desktop board may lose register settings stored in memory.
For more information on standby current requirements for this desktop board, refer to the
Technical Product Specification (TPS) by selecting the Technical Documentation link at:
http://developer.intel.com/design/motherbd/
Hardware Management
• Power connectors
• Fan connectors
• Fan speed control (Intel Precision Cooling)
• Resume on Ring
• Wake from USB
• Wake from PS/2 keyboard/mouse
• PME# wakeup support
Power Connectors
Desktop Board D845PESV has two power connectors. See Figure 11 on page 33 for the location
of the power connectors.
17
Intel Desktop Board D845PESV Product Guide
Fan Connectors
Desktop Board D845PESV has two chassis fan connectors and one processor fan connector. See
Figure 11 on page 33 for the location of the fan connectors.
Fan Speed Control (Inte l® Precision Cooling)
Intel Precision Cooling automatically adjusts the chassis fan speeds depending on the system’s
temperature. This feature reduces system fan noise by lowering the speed of the chassis fans
connected to the front and rear chassis fan connectors (J9H3 and J6B2). The processor fan
connector (J2F1) is not controlled.
The fan speed control feature can be disabled in the BIOS, resulting in the chassis fans always
operating at full speed. This feature should be disabled if a self-controlled fan is attached to a
chassis fan connector.
Overall system noise reduction will vary based on system configuration and environment.
Resume on Ring
The operation of Resume on Ring can be summarized as follows:
• Resumes operation from either ACPI S1 or ACPI S3 state
• Requires only one call to access the computer
• Detects incoming call similarly for external and internal modems
• Requires modem interrupt be unmasked for correct operation
Wake from USB
USB bus activity wakes the computer from an ACPI S1 or S3 state.
NOTE
✏
Wake from USB requires the use of a USB peripheral that supports Wake from USB.
Wake from PS/2 Keyboard/Mouse
PS/2 keyboard/mouse activity wakes the computer from an ACPI S1 or S3 state.
PME# Wakeup Support
When the PME# signal on the PCI bus is asserted, the computer wakes from an ACPI S1, S3, or
S5 state.
Speaker
A speaker is mounted on the desktop board. The speaker provides audible error code (beep code)
information during the Power-On Self-Test (POST).
18
Desktop Board Features
Battery
A battery on the Intel desktop board keeps the values in CMOS RAM and the clock current when
the computer is turned off. See Chapter 2 starting on page 21 for instructions on how to replace
the battery.
Real-Time Clock
Desktop Board D845PESV has a time-of-day clock and 100-year calendar. A battery on the
desktop board keeps the clock current when the computer is turned off.
19
Intel Desktop Board D845PESV Product Guide
20
2 Installing and Replacing Desktop Board
Components
This chapter tells you how to:
• Install the I/O shield
• Install and remove the desktop board
• Install and remove a processor
• Install and remove memory
• Install and remove an AGP card
• Connect the IDE cable
• Connect the front panel header
• Install the front panel audio solution
• Install the front panel USB solution
• Connect fans
• Connect power cables
• Set the BIOS configuration jumper block
• Clear passwords
• Replace the battery
Before You Begin
WARNINGS
The procedures in this chapter assume familiarity with the general terminology associated with
personal computers and with the safety practices and regulatory compliance required for using
and modifying electronic equipment.
Disconnect the computer from its power source and from any telecommunications links,
networks, or modems before performing any of the procedures described in this chapter.
Failure to disconnect power, telecommunications links, networks, or modems before you open
the computer or perform any procedures can result in personal injury or equipment damage.
Some circuitry on the board can continue to operate even though the front panel power
button is off.
CAUTION
Before you install this board in a chassis, see Appendix B for regulatory requirements and
precautions.
• Always follow the steps in each procedure in the correct order.
• Set up a log to record information about your computer, such as model, serial numbers,
installed options, and configuration information.
• Electrostatic discharge (ESD) can damage components. Perform the procedures described in
this chapter only at an ESD workstation using an antistatic wrist strap and a conductive foam
pad. If such a station is not available, you can provide some ESD protection by wearing an
antistatic wrist strap and attaching it to a metal part of the computer chassis.
21
Intel Desktop Board D845PESV Product Guide
Installing the I/O Shield
The Intel desktop board comes with an I/O shield. When installed in the chassis, the shield blocks
radio frequency transmissions, protects internal components from dust and foreign objects, and
promotes correct airflow within the chassis.
Install the I/O shield before installing the desktop board in the chassis. Place the shield inside the
chassis as shown in Figure 3. Press the shield into place so that it fits tightly and securely. If the
shield doesn’t fit, obtain a properly-sized shield from the chassis supplier.
Figure 3. Installing the I/O Shield
OM14723
22
Installing and Replacing Desktop Board Components
Installing and Removing the Desktop Board
Refer to your chassis manual for instructions on installing and removing the Intel desktop board.
WARNING
Only qualified technical personnel should do this procedure. Disconnect the computer from its
power source before performing the procedures described here. Failure to disconnect the power
before you open the computer can result in personal injury or equipment damage.
NOTES
✏
Refer to Appendix B for regulatory requirements and installation instructions and precautions.
Figure 4 shows the location of the eight mounting holes for Desktop Board D845PESV.
OM14724
Figure 4. Desktop Board Mounting Holes
23
Intel Desktop Board D845PESV Product Guide
Installing and Removing a Processor
Instructions on how to install the processor to the desktop board are given below.
Installing a Processor
CAUTION
Before installing or removing the processor, make sure that AC power has been removed by
unplugging the power cord from the computer; the standby power LED should not be lit (see
Figure 2 on page 17). Failure to do so could damage the processor and the board.
To install a processor, follow these instructions:
1. Observe the precautions in “Before You Begin” on page 21.
2. Locate the processor socket and raise the socket lever completely.
3. Install the processor so that the corner with the triangle marking (A) is aligned with the corner
where the lever is attached to the socket (see Figure 5).
4. Lower the lever to its original position.
mPGA478B
mPGA478B
mPGA478B
A
Figure 5. Installing a Processor
Installing the Processor Fan Heat Sink
Desktop Board D845PESV has an integrated processor fan heat sink retention mechanism (RM).
For instructions on how to install the processor fan heat sink to the integrated processor fan heat
sink RM, refer to the boxed processor manual or the Intel World Wide Web site at: