Intel D945GCL User manual

Intel®Desktop Board D945GCL
Product Guide
Order Number: D67420-003

Revision History
Revision Revision History Date
001 First release of the Intel®Desktop Board D945GCL Product Guide August 2006
002 Second release of the Intel®Desktop Board D945GCL Product Guide November 2006
003 Added operating system support February 2007
If an FCC declaration of conformity marking is present on the board, the following statement applies:
FCC Declaration of Conformity
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) this device may not cause harmful interference, and (2) this device must accept any interference
received, including interference that may cause undesired operation.
For questions related to the EMC 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 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 the 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 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.
Any changes or modifications to the equipment not expressly approved by Intel Corporation could void the
user’s authority to operate the equipment.
Tested to comply with FCC standards for home or office use.
Canadian Department of Communications Compliance 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.
Le présent appareil numerique német pas de bruits radioélectriques dépassant les limites applicables aux
appareils numériques de la classe B prescrites dans le Réglement sur le broullage radioélectrique édicté par
le ministére des Communications du Canada.
Disclaimer
INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH INTEL®PRODUCTS. NO LICENSE,
EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS
GRANTED BY THIS DOCUMENT. EXCEPT 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
WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, OR INFRINGEMENT
OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. Intel products are not intended
for use in medical, life saving, or life sustaining applications. Intel may make changes to specifications and
product descriptions at any time, without notice.
Desktop Board D945GCL may contain design defects or errors known as errata which may cause the product
to deviate from published specifications. Current characterized errata are available on request.
Contact your local Intel sales office or your distributor to obtain the latest specifications and before placing
your product order.
Copies of documents which have an ordering number and are referenced in this document, or other Intel
literature, 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, Intel logo, Pentium, and Celeron are registered trademarks of Intel Corporation or its subsidiaries in
the United States and other countries.
* Other names and brands may be claimed as the property of others.
Copyright © 2006, 2007 Intel Corporation. All rights reserved.

iii
Preface
This Product Guide gives information about board layout, component installation, BIOS
update, and regulatory requirements for Intel®Desktop Board D945GCL.
Intended Audience
The Product Guide is intended for technically qualified personnel. It is not intended for
general audiences.
Use Only for Intended Applications
All Intel desktop boards are evaluated as Information Technology Equipment (I.T.E.)
for use in personal computers (PC) for installation in homes, offices, schools, computer
rooms, and similar locations. The suitability of this product for other PC or embedded
non-PC applications or other environments, such as medical, industrial, alarm systems,
test equipment, etc. may not be supported without further evaluation by Intel.
Document Organization
The chapters in this Product Guide are arranged as follows:
1 Desktop Board Features: a summary of product features
2 Installing and Replacing Desktop Board Components: instructions on how to install
the desktop board and other hardware components
3 Updating the BIOS: instructions on how to update the BIOS
A Error Messages and Indicators: information about BIOS error messages and beep
codes
B Regulatory Compliance: safety and EMC regulations and product certifications
Conventions
The following conventions are used in this manual:
CAUTION
Cautions warn the user about how to prevent damage to hardware or loss of data.
NOTE
Notes call attention to important information.

Intel Desktop Board D945GCL Product Guide
iv
Terminology
The table below gives descriptions of some common terms used in the product guide.
Term Description
GB Gigabyte (1,073,741,824 bytes)
GHz Gigahertz (one billion hertz)
KB Kilobyte (1024 bytes)
MB Megabyte (1,048,576 bytes)
Mbit Megabit (1,048,576 bits)
MHz Megahertz (one million hertz)
Box Contents
•Intel Desktop Board D945GCL
•I/O shield
•One diskette drive cable
•One ATA-66/100 cable
•Two locking Serial ATA cables
•Intel®Express Installer CD-ROM
•Quick Reference poster
•Configuration and battery caution statement label

v
Contents
1Desktop Board Features
Supported Operating Systems .............................................................................. 10
Desktop Board Components.................................................................................. 11
Processor ...........................................................................................................13
Main Memory......................................................................................................13
Intel®945G Express Chipset................................................................................. 15
Onboard Audio Subsystem ................................................................................... 15
Input/Output (I/O) Controller ...............................................................................16
LAN Subsystem...................................................................................................16
LAN Subsystem Software.............................................................................. 16
RJ-45 LAN Connector LEDs ...........................................................................17
Hi-Speed USB 2.0 Support ...................................................................................17
Enhanced IDE Interface ....................................................................................... 18
Serial ATA .......................................................................................................... 18
Expandability......................................................................................................18
BIOS .................................................................................................................18
Serial ATA and IDE Auto Configuration ...........................................................18
PCI and PCI Express* Auto Configuration .......................................................19
Security Passwords ...................................................................................... 19
Hardware Management Features ...........................................................................19
Hardware Monitoring and Fan Speed Control................................................... 19
Chassis Intrusion Detection...........................................................................20
Power Management Features ................................................................................20
ACPI .......................................................................................................... 20
Power Connectors........................................................................................20
Fan Headers ...............................................................................................21
LAN Wake Capabilities..................................................................................21
Instantly Available PC Technology.................................................................. 21
+5 V Standby Power Indicator LED ................................................................22
Wake from USB...........................................................................................22
Wake from PS/2 Keyboard/Mouse.................................................................. 23
PME# Signal Wake-up Support...................................................................... 23
WAKE# Signal Wake-up Support ...................................................................23
Speaker ............................................................................................................. 23
Battery .............................................................................................................. 23
Real-Time Clock .................................................................................................. 23
2Installing and Replacing Desktop Board Components
Before You Begin................................................................................................. 25
Installation Precautions........................................................................................ 26
Prevent Power Supply Overload.....................................................................26
Observe Safety and Regulatory Requirements ................................................. 26
Installing the I/O Shield .......................................................................................27
Installing and Removing the Desktop Board............................................................ 28
Installing and Removing a Processor...................................................................... 30
Installing a Processor ................................................................................... 30
Installing the Processor Fan Heat Sink............................................................33

Intel Desktop Board D945GCL Product Guide
vi
Connecting the Processor Fan Heat Sink Cable ................................................ 34
Removing the Processor ............................................................................... 34
Installing and Removing Memory .......................................................................... 35
Installing DIMMs.......................................................................................... 37
Removing DIMMs.........................................................................................38
Installing and Removing a PCI Express x16 Card.....................................................39
Installing a PCI Express x16 Card ..................................................................39
Removing the PCI Express x16 Card ..............................................................40
Connecting the IDE Cable..................................................................................... 41
Connecting the Serial ATA (SATA) Cable ................................................................ 42
Connecting to Internal Headers............................................................................. 43
Installing a Front Panel Audio Solution for Intel®High Definition Audio............... 44
Connecting to the USB 2.0 Headers ...............................................................45
Connecting to the Front Panel Header ............................................................ 45
Connecting to the Alternate Front Panel Power LED Header............................... 46
Connecting to the Flexible Audio System ................................................................ 47
Connecting Chassis Fan and Power Cables..............................................................48
Connecting Chassis Fan Cables...................................................................... 48
Connecting Power Cables.............................................................................. 49
Other Connectors and Headers .............................................................................50
Setting the BIOS Configuration Jumper ..................................................................51
Clearing Passwords..............................................................................................53
Back Panel Connectors......................................................................................... 54
3Updating the BIOS
Updating the BIOS with the Intel®Express BIOS Update Utility................................. 61
Updating the BIOS with the Iflash Memory Update Utility ......................................... 61
Obtaining the BIOS Update File ..................................................................... 62
Updating the BIOS....................................................................................... 62
Recovering the BIOS .................................................................................... 62
AError Messages and Indicators
BIOS Beep Codes ................................................................................................ 63
BIOS Error Messages ........................................................................................... 63
BRegulatory Compliance
Safety Regulations .............................................................................................. 65
Place Battery Marking ..................................................................................65
European Union Declaration of Conformity Statement .............................................. 66
Product Ecology Statements ................................................................................. 67
Lead-Free Desktop Board .............................................................................70
EMC Regulations .................................................................................................71
Ensure Electromagnetic Compatibility (EMC) Compliance .................................. 72
Product Certifications........................................................................................... 73
Board-Level Certification Markings ................................................................. 73
Chassis and Component Certifications ............................................................ 74

Contents
vii
Figures
1. Desktop Board D945GCL Components ..............................................................11
2. LAN Connector LEDs ......................................................................................17
3. Location of Standby Power Indicator ................................................................22
4. Installing the I/O Shield .................................................................................27
5. Desktop Board D945GCL Mounting Screw Hole Locations.................................... 29
6. Lift Socket Lever ........................................................................................... 30
7. Lift the Load Plate..........................................................................................31
8. Remove the Protective Socket Cover ................................................................ 31
9. Remove the Processor from the Protective Processor Cover ................................32
10. Install the Processor ...................................................................................... 32
11. Close the Load Plate....................................................................................... 33
12. Connecting the Processor Fan Heat Sink Cable to the Processor Fan Header.......... 34
13. Dual Channel Memory Configuration Example ................................................... 35
14. Use DDR2 DIMMs ..........................................................................................36
15. Installing a DIMM .......................................................................................... 37
16. Installing a PCI Express x16 Card .................................................................... 39
17. Removing a PCI Express x16 Card ................................................................... 40
18. Connecting the IDE Cable ............................................................................... 41
19. Connecting the Serial ATA Cable...................................................................... 42
20. Internal Headers ...........................................................................................43
21. Back Panel Audio Connectors .......................................................................... 47
22. Location of Chassis Fan Headers......................................................................48
23. Connecting Power Supply Cables ..................................................................... 49
24. Location of Other Connectors and Headers........................................................ 50
25. Location of the BIOS Configuration Jumper Block...............................................51
26. Back Panel Connectors ................................................................................... 54
27. Removing the Battery .................................................................................... 59
Tables
1. Feature Summary............................................................................................9
2. Desktop Board D945GCL Components ..............................................................12
3. Memory Operating Frequencies ....................................................................... 14
4. LAN Connector LED States .............................................................................. 17
5. Front Panel Audio Header Signal Names for Intel High Definition Audio................. 44
6. AC ’97 Audio Header Signal Names .................................................................. 44
7. USB 2.0 Header Signal Names......................................................................... 45
8. Front Panel Header ........................................................................................45
9. Alternate Front Panel Power LED Header........................................................... 46
10. Jumper Settings for the BIOS Setup Program Modes .......................................... 52
11. Beep Codes...................................................................................................63
12. BIOS Error Messages ..................................................................................... 63
13. Safety Regulations.........................................................................................65
14. Lead-Free Board Markings ..............................................................................70
15. EMC Regulations............................................................................................ 71
16. Product Certification Markings .........................................................................73

Intel Desktop Board D945GCL Product Guide
viii

9
1 Desktop Board Features
This chapter briefly describes the main features of Intel®Desktop Board D945GCL.
Table 1 summarizes the major features of the desktop board.
Table 1. Feature Summary
Form Factor microATX 243.84 millimeters (9.60 inches) x 243.84 millimeters (9.60 inches)
Processor Support for an Intel®processor in the LGA775 package
Main Memory •Two 240-pin, DDR2 1.8 V SDRAM Dual Inline Memory Module (DIMM)
sockets
•667/533/400 MHz single or dual channel DDR2 SDRAM interface
•Support for up to 4 GB of system memory
Chipset Intel®945G Express Chipset consisting of:
•Intel®82945G Express Chipset Graphics and Memory Controller Hub
(GMCH)
•Intel®82801GB I/O Controller Hub (ICH7)
Graphics •Intel®945G Express Chipset with Intel®Graphics Media Accelerator 950
(Intel®GMA 950)
•PCI Express* graphics card support via a PCI Express x16 connector
Audio •6-channel (5.1) onboard subsystem, featuring:
―Intel®High Definition Audio interface
―SigmaTel* STAC9220 audio codec
Expansion
Capabilities
•One PCI Express x1 connector
•One PCI Express x16 connector
•Two PCI connectors
Peripheral
Interfaces
•Up to eight USB 2.0 ports
―Four ports routed to the back panel
―Four ports routed to two USB headers
•Four Serial ATA (SATA) channels (3.0 Gb/s), via the ICH7, one device per
channel
•One IDE interface with ATA-66/100 support (two devices)
•One diskette drive interface
•One VGA port
•One parallel port
•One serial port
•PS/2* keyboard and mouse ports
continued

Intel Desktop Board D945GCL Product Guide
10
Table 1. Feature Summary (continued)
LAN Support 10/100 Mb/s) LAN subsystem using the Intel®82562G Platform LAN
Connect (PLC) device
BIOS •Intel®BIOS (resident in the SPI Flash device)
•Support for ACPI, Plug and Play, and SMBIOS
Power
Management
•Support for Advanced Configuration and Power Interface (ACPI)
•Suspend to RAM (STR)
•Wake on USB, PCI Express, PS/2, LAN, and front panel
Hardware
Management
•Three fan headers
•Three fan sensing inputs used to monitor fan activity
•Remote diode temperature sensing
•Voltage sensing to detect out of range values
•Intel®Precision Cooling Technology
Related Links:
For more information about Desktop Board D945GCL, including the Technical Product
Specification (TPS), BIOS updates, and device drivers, go to:
http://support.intel.com/support/motherboards/desktop/
Supported Operating Systems
The desktop board supports the following operating systems:
•Microsoft Windows Vista* Home Basic
•Microsoft Windows Vista Home Basic 64-bit edition
•Microsoft Windows* XP Media Center Edition 2005
•Microsoft Windows XP Professional
•Microsoft Windows XP Professional x64 Edition
•Microsoft Windows XP Home Edition
•Microsoft Windows 2000

Desktop Board Features
11
Desktop Board Components
Figure 1 shows the approximate location of the major components on Desktop Board
D945GCL.
Figure 1. Desktop Board D945GCL Components

Intel Desktop Board D945GCL Product Guide
12
Table 2. Desktop Board D945GCL Components
Label Description
A PCI Express x1 connector
B Front panel audio header
C PCI bus connector 2
D PCI bus connector 1
E PCI Express x16 connector
F Back panel connectors
G 12 V processor core voltage connector (2 x 2 pin )
H Rear chassis fan header (3-pin)
I Processor socket
J Processor fan header (4-pin)
K DIMM 0, Channel A socket
L DIMM 0, Channel B socket
M Main power connector (2 x 12 pin)
N Diskette drive connector
O IDE connector
P Battery
Q Front chassis fan header (3-pin)
R BIOS configuration jumper block
S Chassis intrusion header
T Serial ATA connectors
U Alternate front panel power LED header
V Front panel header
W Hi-speed USB 2.0 headers
X Speaker
Related Links:
Go to the following links for more information about:
•Desktop Board D945GCL http://www.intel.com/design/motherbd
http://support.intel.com/support/motherboards/desktop
•Supported processors http://support.intel.com/support/motherboards/desktop
•Audio software and utilities http://www.intel.com/design/motherbd
•LAN software and drivers http://www.intel.com/design/motherbd

Desktop Board Features
13
Processor
CAUTION
Failure to use the appropriate power supply and/or not connecting the 12 V (2 x 2 pin)
power connector to the desktop board may result in damage to the board or the
system may not function properly.
Desktop Board D945GCL supports an Intel processor in the LGA775 package.
Processors are not included with the desktop board and must be purchased separately.
The processor connects to the desktop board through the LGA775 socket.
The supported processors list for Desktop Board D945GCL is located on the web at:
http://support.intel.com/support/motherboards/desktop/
Related Links:
Go to the following links or pages for more information about:
•Instructions on installing or upgrading the processor, page 30 in Chapter 2
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.
The desktop board supports the dual or single channel memory configurations defined
below.
•Two 240-pin Double Data Rate 2 (DDR2) SDRAM Dual Inline Memory Module
(DIMM) connectors with gold-plated contacts.
•Support for:
―Unbuffered, non-registered single or double-sided DIMMs
―Non-ECC DDR2 memory
⎯DIMM Type and Timings listed below:
Type Timing
DDR2-667 5-5-5 only
DDR2-533 4-4-4 only
―Serial Presence Detect (SPD) memory only
―Memory configurations listed below:
•Up to 2.0 GB utilizing 512 Mb and 1 Gb technology
•Up to 4.0 GB utilizing 1 Gb technology
Intel recommends using memory from the tested memory lists, available at:
http://www.cmtlabs.com/mbsearch.asp or
http://www.intel.com/products/motherboard/index.htm?iid=HMPAGE+Header_2_Product_MB

Intel Desktop Board D945GCL Product Guide
14
NOTE
Regardless of the DIMM type used, the memory frequency will either be equal to or
less than the processor system bus frequency. For example, if DDR2 667 memory is
used with a 533 MHz system bus frequency processor, the memory will operate
at 533 MHz. Table 3 lists the resulting operating memory frequencies based on the
combination of DIMMs and processors.
Table 3. Memory Operating Frequencies
DIMM Type
Processor System Bus
Frequency
Resulting Memory
Frequency
DDR2 400 533 400
DDR2 400 800 400
DDR2 400 1066 400
DDR2 533 533 533
DDR2 533 800 533
DDR2 533 1066 533
DDR2 667 533 533
DDR2 667 800 667
DDR2 667 1066 667
Related Links:
Go to the following links or pages for more information about:
•SDRAM specifications, http://www.intel.com/technology/memory/
•Installing memory, page 35 in Chapter 2

Desktop Board Features
15
Intel®945G Express Chipset
The Intel 945G Express Chipset consists of the following devices:
•Intel 82945G Express Chipset Graphics and Memory Controller Hub (GMCH)
•Intel 82801GB I/O Controller Hub (ICH7)
The Intel 945G Express Chipset contains two separate, mutually exclusive graphics
options. Either the integrated Intel GMA 950 graphics controller is used or a PCI
Express x16 add-in card can be used. When a PCI Express x16 add-in card is
installed, the Intel GMA 950 graphics controller is disabled.
Related Link:
Go to the following link for more information about the Intel 945G Express Chipset:
http://developer.intel.com/design/nav/pcserver.htm
Onboard Audio Subsystem
Desktop Board D945GCL has a flexible 6-channel (5.1) onboard audio subsystem that
includes a SigmaTel STAC9220 audio codec.
The audio subsystem features:
•Intel High Definition Audio interface
•Advanced jack sense, for the back panel connectors, that enables the audio codec
to recognize the device that is connected to an audio port and retask the connector
via the audio driver.
•S/N (signal-to-noise) ratio: 95 dB
•Microphone input supporting:
―Stereo microphone
―Microphone boost
The subsystem includes the following connectors:
•Front panel audio connector, including functionality for:
―Line out
―Microphone in
•Back panel audio connectors that are configurable through the audio device
drivers:
―Line in/retasking jack
―Line out/retasking jack
―Mic in/retasking jack
Related Links:
Go to the following link or pages for more information about:
•Audio drivers and utilities http://support.intel.com/support/motherboards/desktop/
•Installing the front panel audio solution, page 44
•The location of audio connectors, Figure 21 on page 47

Intel Desktop Board D945GCL Product Guide
16
Input/Output (I/O) Controller
The super I/O controller features the following:
•One serial port
•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 or 1.44 MB diskette drive
•Intelligent power management, including a programmable wake up event interface
•PCI power management support
LAN Subsystem
The LAN subsystem consists of the following:
•Intel®82562G Platform LAN Connect (PLC) device for 10/100 Mb/s Ethernet LAN
connectivity
•RJ-45 connector with status indicator LEDs
LAN Subsystem Software
For LAN software and drivers, refer to the D945GCL link on Intel’s World Wide Web
site at:
http://support.intel.com/support/motherboards/desktop

Desktop Board Features
17
RJ-45 LAN Connector LEDs
Two LEDs are built into the RJ-45 LAN connector located on the back panel (see
Figure 2). These LEDs indicate the status of the LAN.
Figure 2. LAN Connector LEDs
Table 4 describes the LED states when the board is powered up and the LAN
subsystem is operating.
Table 4. LAN Connector LED States
LED LED Color LED State Indicates
Off LAN link is not established.
On LAN link is established.
A
Green
Blinking LAN activity is occurring.
Off 10 Mb/s data rateB Yellow On 100 Mb/s data rate
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.
The desktop board supports up to eight USB 2.0 ports via ICH7 (four ports routed to
the back panel and four ports routed to two internal USB 2.0 headers). 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 the 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.

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18
Enhanced IDE Interface
The desktop board’s IDE interface handles the exchange of information between the
processor and peripheral devices such as hard disk drives and CD-ROM drives. The
interface supports:
•Up to two IDE devices (such as hard drives)
•ATAPI-style devices (such as CD-ROM drives)
•Older PIO Mode devices
•Ultra DMA-33 and ATA-66/100 protocols
Serial ATA
The desktop board supports four Serial ATA channels (3.0 Gb/s) via ICH7, connecting
one device per channel.
Expandability
For system expansion, the desktop board provides the following:
•One PCI Express x16 connector
•One PCI Express x1 connector
•Two PCI bus connectors
BIOS
The BIOS provides the Power-On Self-Test (POST), the BIOS Setup program, the
PCI/PCI Express and IDE auto-configuration utilities, and the video BIOS. The BIOS is
stored in a Serial Peripheral Interface (SPI) Flash device.
The BIOS can be updated by following the instructions on page 61 in Chapter 3.
Serial ATA and IDE Auto Configuration
If you install a Serial ATA or IDE device (such as a hard drive) in your computer, the
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 a
Serial ATA or IDE device. You can override the auto-configuration options by
specifying manual configuration in the BIOS Setup program.

Desktop Board Features
19
PCI and PCI Express*Auto Configuration
If you install a PCI/PCI Express add-in card in your computer, the PCI/PCI Express
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/PCI Express add-in card.
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 BIOS 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.
Related Links:
For instructions on resetting the password, see Clearing Passwords on page 53.
Hardware Management Features
The hardware management features of Desktop Board D945GCL enable the board to
be compatible with the Wired for Management (WfM) specification. The board has
several hardware management features including the following:
•Fan speed monitoring and control
•Thermal and voltage monitoring
•Chassis intrusion detection
Hardware Monitoring and Fan Speed Control
The features of the hardware monitoring and fan speed control include:
•Monitoring of power supply voltages to detect levels above and below acceptable
values
•Intel Precision Cooling Technology
•Thermal sensors in the processor, GMCH, and ICH7 plus an onboard remote sensor
•Thermally monitored closed-loop fan control, for all onboard fans, that can adjust
fan speed or switch the fans off as needed

Intel Desktop Board D945GCL Product Guide
20
Chassis Intrusion Detection
The board supports a chassis security feature that detects if the chassis cover has
been removed. The security feature uses a mechanical switch on the chassis that can
be connected to the chassis intrusion header on the desktop board. See Figure 24 on
page 50 for the location of the chassis intrusion header.
Power Management Features
Power management is implemented at several levels, including:
•Software support through the Advanced Configuration and Power Interface (ACPI)
•Hardware support:
―Power connectors
―Fan headers
―LAN wake capabilities
―Instantly Available PC technology (Suspend to RAM)
―+5 V standby power indicator LED
―Wake from USB
―Wake from PS/2 keyboard/mouse
―Power Management Event signal (PME#) wakeup support
―WAKE# signal wake-up support
ACPI
ACPI gives the operating system direct control over the power management and Plug
and Play functions of a computer. The use of ACPI with the desktop board requires an
operating system that provides full ACPI support.
Power Connectors
ATX12V-compliant power supplies can turn off the computer power through system
control. When an ACPI-enabled computer receives the correct command, the power
supply removes all non-standby voltages.
When resuming from an AC power failure, the computer returns to the power state it
was in before power was interrupted (either on or off). The computer’s response can
be set by using the Last Power State feature in the BIOS Setup program’s Boot menu.
The desktop board has two power connectors. See Figure 23 on page 49 for the
location of the power connectors.