INTEL D915PDT User Manual

Intel® Desktop Board D915PDT Product Guide

Order Number: D23918-003

Revision History

Revision Revision History Date

-002

-003

If an FCC declaration of conformity marking is present on the board, the following statement applies:

First release of the Intel

Second release of the Intel

Desktop Board D915PDT Product Guide.

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 D915PDT 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, 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.

September 2005

April 2006

Preface

This Product Guide gives information about board layout, component installation, BIOS update, and

regulatory requirements for Intel

Desktop Board D915PDT.

Intended Audience

The Product Guide is intended for technically qualified personnel.

Information Layout

The chapters in this Product Guide are arranged as follows:

0H1 Desktop Board Features: a summary of product features 1H2 Installing and Replacing Desktop Board Components: instructions on how to install the desktop

board and other hardware components

2H3 BIOS: instructions on how to update the BIOS 3HA Error Messages and Indicators: information about BIOS error messages and beep codes 4HB Regulatory Compliance: safety and EMC regulations, product certification

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.

iii

Intel Desktop Board D915PDT Product Guide

Terminology

The table below gives descriptions to 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

• I/O shield

• One IDE cable

• Two SATA cables (second cable optional)

• One diskette drive cable

• Quick Reference Guide

• Configuration label

• Intel

Express Installer CD-ROM

Platform Administration Technology CD-ROM

Contents

1 Desktop Board Features

Supported Operating Systems ............................................................................................45H10

Desktop Board Components ...............................................................................................46H11

Processor............................................................................................................................47H13

Main Memory ......................................................................................................................48H14

Intel® 915P Express Chipset ...............................................................................................49H15

Audio Subsystem ................................................................................................................50H15

Input/Output (I/O) Controller................................................................................................51H16

LAN Subsystem ..................................................................................................................52H16

LAN Subsystem Software...........................................................................................53H16

RJ-45 LAN Connector LEDs.......................................................................................54H16

Hi-Speed USB 2.0 Support..................................................................................................55H17

Enhanced IDE Interface ......................................................................................................56H18

Serial ATA...........................................................................................................................57H18

Expandability.......................................................................................................................58H18

BIOS ...................................................................................................................................59H18

Serial ATA and IDE Auto Configuration ......................................................................60H18

PCI and PCI Express* Auto Configuration ..................................................................61H18

Security Passwords....................................................................................................62H19

Chassis Intrusion.................................................................................................................63H19

Power Management Features .............................................................................................64H19

ACPI...........................................................................................................................65H19

Power Connectors......................................................................................................66H19

Fan Connectors..........................................................................................................67H20

Fan Speed Control (Intel® Precision Cooling Technology)..........................................68H20

Suspend to RAM (Instantly Available PC Technology) ...............................................69H20

Resume on Ring.........................................................................................................70H21

Wake from USB..........................................................................................................71H21

Wake from PS/2 Keyboard/Mouse..............................................................................72H21

PME# Wakeup Support..............................................................................................73H21

Speaker...............................................................................................................................74H21

Battery.................................................................................................................................75H22

Real-Time Clock..................................................................................................................76H22

2 Installing and Replacing Desktop Board Components

Before You Begin................................................................................................................77H23

Installation Precautions .......................................................................................................78H24

Installation Instructions........................................................................................................79H24

Ensure Electromagnetic Compatibility (EMC) Compliance..........................................80H24

Chassis and Component Certifications.......................................................................81H25

Prevent Power Supply Overload.................................................................................82H25

Place Battery Marking ................................................................................................83H25

Use Only for Intended Applications.............................................................................84H26

Installing the I/O Shield .......................................................................................................85H26

Installing and Removing the Desktop Board........................................................................86H27

Intel Desktop Board D915PDT Product Guide

Installing and Removing a Processor ..................................................................................87H28

Installing a Processor .................................................................................................88H28

Installing the Processor Fan Heat Sink.......................................................................89H31

Removing the Processor ............................................................................................90H32

Installing and Removing Memory ........................................................................................91H32

Installing DIMMs.........................................................................................................92H33

Removing DIMMs.......................................................................................................93H34

Installing and Removing a PCI Express x16 Card ...............................................................94H34

Installing a PCI Express Card.....................................................................................95H34

Removing the PCI Express Card................................................................................96H35

Connecting the IDE Cable...................................................................................................97H35

Connecting the Serial ATA (SATA) Cable ...........................................................................98H37

Connecting Internal Headers...............................................................................................99H38

Installing a Front Panel Audio Solution .......................................................................100H39

Connecting USB 2.0 Headers.....................................................................................101H40

Connecting the Front Panel Header ...........................................................................102H40

Setting Up the Flexible 6-Channel Audio with Jack Re-tasking...........................................103H41

Connecting Fan and Power Cables .....................................................................................104H42

Connecting Fan Cables ..............................................................................................105H42

Connecting Power Cables ..........................................................................................106H43

Other Connectors................................................................................................................107H44

Setting the BIOS Configuration Jumper...............................................................................108H45

Clearing Passwords ............................................................................................................109H46

Back Panel Connectors.......................................................................................................110H47

Replacing the Battery..........................................................................................................111H48

3 BIOS

Updating the BIOS with the Intel® Express BIOS Update Utility...........................................112H53

Updating the BIOS with the Iflash Memory Update Utility....................................................113H54

Obtaining the BIOS Update File..................................................................................114H54

Updating the BIOS......................................................................................................115H54

Recovering the BIOS..................................................................................................116H55

A Error Messages and Indicators

BIOS Beep Codes...............................................................................................................117H57

BIOS Error Messages .........................................................................................................118H58

B Regulatory Compliance

Safety Regulations..............................................................................................................119H61

European Union Declaration of Conformity Statement ........................................................120H61

Product Ecology Statements ...............................................................................................121H63

Lead-Free Desktop Board ..........................................................................................122H65

Product Certification Markings (Board Level) ......................................................................123H67

Figures

1. Intel Desktop Board D915PDT Components.................................................................124H11

2. Back Panel LAN Connector LED Locations ..................................................................125H16

3. Location of Standby Power Indicator.............................................................................126H21

4. Installing the I/O Shield.................................................................................................127H26

5. Desktop Board D915PDT Mounting Screw Hole Locations...........................................128H27

6. Lift Socket Lever...........................................................................................................129H28

7. Lift the Load Plate and Don’t Touch the Socket Contacts .............................................130H28

8. Remove the Protective Socket Cover ...........................................................................131H29

9. Remove the Processor from the Protective Processor Cover/Do Not Touch.................132H29

10. Install Processor...........................................................................................................133H30

11. Close the Load Plate ....................................................................................................134H30

12. Connecting the Processor Fan Heat Sink Cable to the Processor Fan Connector ........135H31

13. Memory Configuration Example....................................................................................136H32

14. Installing a DIMM..........................................................................................................137H33

15. Removing the PCI Express x16 Card............................................................................138H35

16. Connecting the IDE Cable ............................................................................................139H36

17. Connecting the Serial ATA Cable .................................................................................140H37

18. Internal Headers ...........................................................................................................141H38

19. Back Panel Audio Connectors for Flexible 6-Channel Audio System ............................142H41

20. Location of Fan Headers...............................................................................................143H42

21. Connecting Power Supply Cables.................................................................................144H43

22. Location of the Other Connectors on Desktop Board D915PDT....................................145H44

23. Location of the BIOS Configuration Jumper Block ........................................................146H45

24. Back Panel Connectors ................................................................................................147H47

25. Removing the Battery ...................................................................................................148H52

26. F2 Key ..........................................................................................................................149H53

Contents

Tables

1. Feature Summary...........................................................................................................150H9

2. Desktop Board D915PDT Components ........................................................................151H12

3. Desktop Board D915PDT Memory Configurations........................................................152H14

4. RJ-45 10/100 Ethernet LAN Connector LEDs ...............................................................153H17

5. Front Panel Audio Header Signal Names......................................................................154H39

6. USB 2.0 Header Signal Names.....................................................................................155H40

7. Front Panel Header Signal Names................................................................................156H40

8. Jumper Settings for the BIOS Setup Program Modes...................................................157H45

9. Beep Codes..................................................................................................................158H57

10. BIOS Error Messages...................................................................................................159H58

11. Safety Regulations........................................................................................................160H61

12. Lead-Free Board Markings ...........................................................................................161H65

13. EMC Regulations..........................................................................................................162H66

14. Product Certification Markings ......................................................................................163H67

vii

Intel Desktop Board D915PDT Product Guide

viii

1 Desktop Board Features

This chapter briefly describes the main features of Intel® Desktop Board D915PDT. 164HTable 1 summarizes the major features of the desktop board.

Table 1. Feature Summary

Form Factor

5HProcessor Support for:

6HMain Memory

7HChipset

8HAudio

9HExpansion

Capabilities

10HPeripheral

Interfaces

11HLAN

microATX (9.60” x 9.60”)

• Intel

Pentium® 4 processor in the LGA775 package

Celeron® D processor in the LGA 775 package

• Two 184-pin, 2.5 V SDRAM Dual Inline Memory Module (DIMM) sockets

• 333/400 MHz single or dual channel DDR SDRAM interface

• Designed to support up to 2 GB of system memory

915P Express Chipset consisting of:

Intel

• Intel

82915P Memory Controller Hub (MCH) with Direct Media Interface

82801FB I/O Controller Hub (ICH6)

• 8-Mbit Firmware Hub (FWH)

• Intel 915P Express Chipset

• Intel

High Definition Audio

• Realtek codec

• Two PCI bus add-in card connectors (SMBus routed to PCI bus connector 2)

• One PCI Express* x16 connector

• One PCI Express x1 connector

• 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, via ICH6, one device per channel

• One IDE interface with ATA-66/100 support (two devices)

• One diskette drive interface

• One parallel port

• One serial port

• PS/2* keyboard and mouse ports

Integrated Intel

GD82562GX 10/100 Mbit/sec Platform LAN Connect (PLC) device

with RJ-45 connector

continued

Intel Desktop Board D915PDT Product Guide

Table 1. Feature Summary (continued)

12HBIOS

13HPower Management

14HHardware Management Hardware monitor with:

• Intel/AMI BIOS

• Support for SMBIOS

• Intel

Rapid BIOS Boot

Express BIOS Update

• Support for Advanced Configuration and Power Interface (ACPI)

• Suspend to RAM (STR)

• Wake on USB, PCI, PCI Express, PS/2, LAN, and front panel

• Three fan sensing inputs used to monitor fan activity

• Remote diode temperature sensing

• Intel

Precision Cooling Technology fan speed control that automatically adjusts processor fan speed based on processor temperature and chassis fan speeds based on system temperature

• Voltage sensing to detect out of range values

Related Links:

For more information about Intel Desktop Board D915PDT, including the Technical Product Specification (TPS), BIOS updates, and device drivers, go to:

15Hhttp://support.intel.com/support/motherboards/desktop/

Supported Operating Systems

The desktop board supports the following operating systems:

• Microsoft Windows* 2000

• Microsoft Windows XP

Desktop Board Features

Desktop Board Components

165HFigure 1 shows the approximate location of the major components on desktop board D915PDT.

Line In

RJ45

D EFA B C

Intel

82915P

(MCH)

Intel

82801FB

(ICH)

Channel A

DIMM 0

Channel B

DIMM 0

K JLO MPRS Q N

OM18051A

Figure 1. Intel Desktop Board D915PDT Components

Intel Desktop Board D915PDT Product Guide

Table 2. Desktop Board D915PDT Components

Label Description

A Speaker

B PCI Express x1 connector

C Front panel audio header

D PCI Express x16 connector

E Rear chassis fan header (fan speed control)

F Back panel I/O connectors

G 12 V processor core voltage connector (2x2)

H Processor socket

I Processor fan header (4-pin, fan speed control)

J Main power connector (2x12)

K Diskette drive connector

L IDE connector

M Battery

N Chassis intrusion header

O BIOS configuration jumper

P Front chassis fan header (fan speed control)

Q Serial ATA connectors (four)

R Power LED header

S Front panel header

T USB 2.0 headers

U PCI bus add-in card connectors

Related Links:

Go to the following links for more information about:

• Intel Desktop Board D915PDT

• Supported processors

• Audio software and utilities

• LAN software and drivers

16Hhttp://www.intel.com/design/motherbd 17Hhttp://support.intel.com/support/motherboards/desktop

18Hhttp://support.intel.com/support/motherboards/desktop

19Hhttp://www.intel.com/design/motherbd

20Hhttp://www.intel.com/design/motherbd

Desktop Board Features

Processor

CAUTION

Failure to use an ATX12V power supply, or not connecting the 12 V (2x2) processor core voltage power supply connector to Desktop Board D915PDT may result in damage to the desktop board and/or power supply.

Desktop Board D915PDT supports a single Intel Pentium 4 processor or Intel Celeron D processor in the LGA775 package. Processors are not included with the desktop board and must be purchased separately. The processor connects to the Intel desktop board through the LGA775 socket.

The supported processors list for Desktop Board D915PDT is located on the web at:

21Hhttp://support.intel.com/support/motherboards/desktop/

Related Links:

Go to the following links or pages for more information about:

• Supported Intel processors for Desktop Board D915PDT

22Hhttp://support.intel.com/support/motherboards/desktop/

• Instructions on installing or upgrading the processor, page 166H28 in Chapter 2

• The location of the two power connectors, page

167H43 in Chapter 2

Intel Desktop Board D915PDT Product Guide

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 dual or single channel memory configurations. Desktop Board D915PDT supports dual or single channel memory configurations defined in

Table 3. Desktop Board D915PDT Memory Configurations

Memory Speed

DDR 400

Processor

Intel® Pentium® 4 processor 800 400

Intel Pentium 4 processor

Intel

Celeron® D processor

FSB frequency (MHz)

533 400

168HTable 3.

Memory Speed Outcome (MHz)

DDR 333

Pentium 4 processor 800 333

Pentium 4 processor

Intel Celeron D processor

533 333

Desktop board D915PDT supports:

• Two 184-pin Double Data Rate (DDR) SDRAM Dual Inline Memory Module (DIMMs)

connectors with gold-plated contacts

• Unbuffered, non-registered single or double-sided DIMMs

• Serial Presence Detect (SPD) memory only

• Non-ECC RAM

• 2.5 V memory

• Memory configurations listed below: ⎯ Up to 1.0 GB utilizing 512 Mb technology ⎯ Up to 2.0 GB utilizing 1 Gb technology

Related Links:

Go to the following links or pages for more information about:

• The latest list of tested memory,

• SDRAM specifications,

• Installing memory, page

24Hhttp://www.intel.com/technology/memory/

169H32 in Chapter 2

23Hhttp://support.intel.com/support/motherboards/desktop/

Desktop Board Features

Intel® 915P Express Chipset

The Intel 915P Express Chipset consists of the following devices:

• Intel 82915P Memory Controller Hub (MCH) with Digital Media Interface

• Intel 82801FB I/O Controller Hub (ICH6)

• Firmware Hub (FWH)

Related Links:

Go to the following link or pages for more information about:

• Audio drivers and utilities

• Installing the front panel audio solution, page

• The location of audio connectors,

26Hhttp://support.intel.com/support/motherboards/desktop/

170H39 in Chapter 2

171HFigure 19 on page 172H41

Intel Desktop Board D915PDT Product Guide

Input/Output (I/O) Controller

The super I/O controller features the following:

• Low pin count (LPC) interface

• 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 integrated LAN, with the Intel 82801FB (ICH6), provides a Fast PCI LAN subsystem. The LAN subsystem provides the following functions:

• Basic 10/100 Ethernet LAN (Intel GD82562GX)

• Support for 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 D915PDT link on Intel’s World Wide Web site at:

27Hhttp://support.intel.com/support/motherboards/desktop

RJ-45 LAN Connector LEDs

Two LEDs are built into the RJ-45 LAN connector (see 173HFigure 2).

OM17386

Figure 2. Back Panel LAN Connector LED Locations

Desktop Board Features

174HTable 4 describes the LED states when the board is powered up and the 10/100 Ethernet LAN

subsystem is operating.

Table 4. RJ-45 10/100 Ethernet LAN Connector LEDs

LED Color LED State Indicates

Off LAN link is not established. Green

On LAN link is established.

Blinking LAN activity is occurring.

Off 10 Mbits/sec data rate is selected. Yellow

On (steady state) 100 Mbits/sec data rate is selected.

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 ICH6; four ports routed to the back panel and four 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.

Intel Desktop Board D915PDT Product Guide

Enhanced IDE Interface

The ICH6’s IDE interface handles the exchange of information between the processor and peripheral devices like hard disks, CD-ROM drives, and Iomega Zip* drives inside the computer. 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

• Laser Servo (LS-120) drives

Serial ATA

The desktop board supports four Serial ATA channels via ICH6, connecting one device per channel.

Expandability

The desktop board supports the following:

• One PCI Express x16 add-in card

• One PCI Express x1 add-in card

• Two PCI add-in cards

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 the Firmware Hub.

Serial ATA and IDE Auto Configuration

If you install a Serial ATA or IDE device (such as a hard drive) in your computer, the autoconfiguration 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.

PCI and PCI Express* Auto Configuration

If you install a PCI/PCI Express add-in card in your computer, the PCI/PCI Express autoconfiguration 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.

Desktop Board Features

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.

Chassis Intrusion

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 intrusion header.

175HFigure 18 on page 176H38 for the location of the chassis

Power Management Features

Power management is implemented at several levels, including:

• Advanced Configuration and Power Interface (ACPI)

• Hardware support: ⎯ Power connectors ⎯ Fan connectors ⎯ Suspend to RAM (Instantly Available PC technology) ⎯ Resume on Ring ⎯ Wake from USB ⎯ Wake from PS/2 keyboard/mouse ⎯ PME# wakeup 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

The desktop board has two power connectors. See 177HFigure 21 on page 178H43 for the location of the power connectors.

Intel Desktop Board D915PDT Product Guide

Fan Connectors

The desktop board has a 4-pin processor fan header and two 3-pin chassis fan headers. See

179HFigure 20 on page 180H42 for the location of the fan headers.

Fan Speed Control (Intel® Precision Cooling Technology)

Intel Precision Cooling Technology automatically adjusts the processor fan speed based on the processor thermal diode temperature and adjusts the chassis fan speeds depending on the system temperature. System fan noise may be reduced by operating controlled chassis and processor fans at the minimum necessary speeds.

The processor and chassis fan speed control features can be disabled independently through the desktop board BIOS. Disabling the processor fan speed control will result in the fan operating at full speed if it is not a self controlled fan. It is recommended that processor fan speed control remain enabled (default BIOS setting) when using the processor fan heat-sink included with Intel boxed processors. Disabling the chassis fan speed control results in chassis fans always operating at full speed. The chassis fan speed control feature should be disabled if a self-controlled chassis fan is attached to any controlled chassis fan header.

The overall system noise reduction will vary based on system configuration and environment.

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 affect ACPI S3 sleep state functionality.

CAUTION

Power supplies used with this desktop 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 desktop board may lose register settings stored in memory.

Instantly Available PC 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 desktop board’s standby power indicator, shown in 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.

181HFigure 3, is lit when there is standby power

Desktop Board Features

OM18052

Figure 3. Location of Standby Power Indicator

Related Links:

For more information on standby current requirements for the desktop board, refer to the Technical Product Specification by going to the following link, finding the product, and selecting Product Documentation from the left-hand menu:

28Hhttp://support.intel.com/support/motherboards/desktop/

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

NOTE

Wake from USB requires the use of a USB peripheral that supports wake from USB.

USB bus activity wakes the computer from an ACPI S1 or S3 state.

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).

+ 47 hidden pages