Intel BLKDH61WWB3 User manual

Intel®Desktop Board DH61WW
Product Guide
Order Number: G23562-003

Revision History
Revision Revision History Date
-001 First release of the Intel®Desktop Board DH61WW Product Guide February 2011
-002 Second release of the Intel®Desktop Board DH61WW Product Guide April 2011
-003 Third release of the Intel®Desktop Board DH61WW Product Guide March 2012
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.
Intel Desktop Board DH61WW 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 Core, and Pentium are trademarks of Intel Corporation in the U.S. and/or other countries.
* Other names and brands may be claimed as the property of others.
Copyright © 2011, 2012, Intel Corporation. All rights reserved.

Preface
This Product Guide gives information about board layout, component installation, BIOS
update, and regulatory requirements for Intel®Desktop Board DH61WW.
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: describes the board’s adherence to safety standards and
EMC regulations and its 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.
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Intel Desktop Board DH61WW 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)
Mb Megabit (1,048,576 bits)
MHz Megahertz (one million hertz)

Contents
1Desktop Board Features
Supported Operating Systems..............................................................................11
Desktop Board Components.................................................................................12
Processor..........................................................................................................14
Intel®H61 Express Chipset .................................................................................15
Main Memory.....................................................................................................15
Graphics Subsystem...........................................................................................16
Integrated Graphics ....................................................................................16
Analog Display (VGA)...........................................................................16
PCI Express* x16 Graphics ..........................................................................16
Audio Subsystem ...............................................................................................16
LAN Subsystem .................................................................................................17
USB Support .....................................................................................................18
SATA Support....................................................................................................18
Expandability.....................................................................................................18
Legacy I/O........................................................................................................18
BIOS................................................................................................................19
SATA Auto Configuration .............................................................................19
PCI*/PCI Express Auto Configuration.............................................................19
BIOS Security Passwords.............................................................................19
Trusted Platform Module (TPM) Support..................................................20
Fan Speed Control and Hardware Monitoring ..................................................20
Power Management ....................................................................................20
Software Support ................................................................................20
Hardware Support ...............................................................................21
Onboard Speaker ...............................................................................................25
Real-Time Clock Subsystem.................................................................................25
2Installing and Replacing Desktop Board Components
Before You Begin ...............................................................................................27
Installation Precautions.......................................................................................28
Prevent Power Supply Overload ....................................................................28
Observe Safety and Regulatory Requirements.................................................28
Installing the I/O Shield ......................................................................................29
Installing and Removing the Desktop Board ...........................................................30
Installing and Removing a Processor.....................................................................31
Installing a Processor ..................................................................................31
Installing a Processor Fan Heat Sink..............................................................35
Connecting the Processor Fan Heat Sink Cable................................................35
Removing the Processor ..............................................................................35
Installing and Removing System Memory ..............................................................36
Installing DIMMs ........................................................................................37
Removing DIMMs........................................................................................39
Installing and Removing PCI Express x16 Graphics Cards.........................................39
Installing a PCI Express x16 Graphics Card ....................................................39
Removing a PCI Express x16 Graphics Card....................................................41
Connecting Serial ATA (SATA) Cables....................................................................42
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Intel Desktop Board DH61WW Product Guide
Connecting to the Internal Headers ......................................................................43
Front Panel Audio Header ............................................................................44
S/PDIF Header ...........................................................................................44
Chassis Intrusion Header .............................................................................45
TPM Header ...............................................................................................45
Front Panel Header .....................................................................................46
Serial Header.............................................................................................46
Front Panel USB 2.0 Header .........................................................................47
Connecting to the Audio System...........................................................................48
Connecting Chassis Fan and Power Supply Cables...................................................49
Connecting a Chassis Fan Cable....................................................................49
Connecting Power Supply Cables ..................................................................50
Setting the BIOS Configuration Jumper .................................................................51
Clearing Passwords in the BIOS Setup Program ......................................................52
Replacing the Battery .........................................................................................53
3Updating the BIOS
Updating the BIOS with the Intel®Express BIOS Update Utility.................................59
Updating the BIOS Using the F7 Function Key ........................................................60
Updating the BIOS with the ISO Image BIOS Update File or the Intel®Flash
Memory Update Utility...................................................................................61
Obtaining the BIOS Update File ....................................................................61
Updating the BIOS with the Intel Flash Memory Update Utility...........................61
Updating the BIOS with the ISO Image BIOS Update File .................................62
Recovering the BIOS...................................................................................63
AError Messages and Indicators
BIOS Error Codes...............................................................................................65
BIOS Error Messages..........................................................................................66
BRegulatory Compliance
Safety Standards ...............................................................................................67
Battery Caution ..........................................................................................67
European Union Declaration of Conformity Statement..............................................68
Product Ecology Statements ................................................................................69
Recycling Considerations .............................................................................69
China RoHS ...............................................................................................72
EMC Regulations ................................................................................................73
FCC Declaration of Conformity......................................................................73
Canadian Department of Communications Compliance Statement......................74
Japan VCCI Statement ................................................................................74
Korea Class B Statement .............................................................................75
Ensure Electromagnetic Compatibility (EMC) Compliance..................................75
Product Certifications..........................................................................................76
Board-Level Certifications ............................................................................76
Chassis- and Component-Level Certifications..................................................77
ENERGY STAR*, e-Standby, and ErP Compliance ....................................................77
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Contents
Figures
1. Intel Desktop Board DH61WW Components......................................................12
2. LAN Status LEDs ..........................................................................................17
3. Location of the Standby Power Indicator ..........................................................23
4. Installing the I/O Shield ................................................................................29
5. Intel Desktop Board DH61WW Mounting Screw Hole Locations ............................30
6. Unlatch the Socket Lever...............................................................................31
7. Lift the Load Plate.........................................................................................32
8. Remove the Processor from the Protective Cover ..............................................33
9. Install the Processor .....................................................................................33
10. Secure the Load Plate in Place........................................................................34
11. Connecting the Processor Fan Heat Sink Power Cable to the Processor
Fan Header..................................................................................................35
12. Dual Channel Memory Configuration Example ...................................................36
13. Use DDR3 DIMMs .........................................................................................37
14. Installing a DIMM .........................................................................................38
15. Installing a PCI Express x16 Graphics Card ......................................................40
16. Removing a PCI Express x16 Graphics Card......................................................41
17. Connecting a Serial ATA Cable........................................................................42
18. Internal Headers ..........................................................................................43
19. Back Panel Audio Connectors .........................................................................48
20. Location of the Chassis Fan Header .................................................................49
21. Connecting Power Supply Cables ....................................................................50
22. Location of the BIOS Configuration Jumper Block ..............................................51
23. Removing the Battery ...................................................................................58
24. Intel Desktop Board DH61WW China RoHS Material Self Declaration Table............72
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Intel Desktop Board DH61WW Product Guide
viii
Tables
1. Feature Summary.......................................................................................... 9
2. Intel Desktop Board DH61WW Components......................................................13
3. LAN Status LEDs States.................................................................................18
4. Front Panel Audio Signal Names for Intel HD Audio............................................44
5. Front Panel Audio Header Signal Names for AC ’97 Audio ...................................44
6. S/PDIF Header Signal Names .........................................................................44
7. Chassis Intrusion Header Signal Names ...........................................................45
8. TPM Header Signal Names .............................................................................45
9. Front Panel Header Signal Names ...................................................................46
10. Serial Port Header Signal Names.....................................................................46
11. Front Panel USB 2.0 Header Signal Names .......................................................47
12. Jumper Settings for the BIOS Setup Program Modes..........................................52
13. BIOS Beep Codes .........................................................................................65
14. Front-panel Power LED Blink Codes .................................................................66
15. BIOS Error Messages ....................................................................................66
16. Safety Standards..........................................................................................67
17. EMC Regulations...........................................................................................73
18. Regulatory Compliance Marks.........................................................................76

1 Desktop Board Features
This chapter briefly describes the features of Intel®Desktop Board DH61WW. Table 1
summarizes the major features of the Desktop Board.
Table 1. Feature Summary
Form Factor MicroATX (243.84 millimeters [9.60 inches] x 198.12 millimeters
[7.80 inches])
Processor Support •Intel®Core™ i7, Intel®Core™ i5, Intel®Core™ i3, and
Intel®Pentium processors in an LGA1155 package:
―Integrated graphics processing (processors with Intel®Graphics
Technology)
―External graphics interface controller
―Integrated memory controller
Chipset Intel®H61 Express Chipset consisting of the Intel®H61 Express
Platform Controller Hub (PCH)
Memory Support •Two 240-pin DDR3 SDRAM Dual Inline Memory Module (DIMM)
sockets
•Support for DDR3 1333 MHz and DDR3 1066 MHz DIMMs
•Support for 1 Gb, 2 Gb, and 4 Gb memory technology
•Support for up to 16 GB of system memory with two DIMMs using
4 Gb memory technology
•Support for non-ECC memory
Graphics Support •Integrated graphics support (VGA) for processors with Intel
Graphics Technology
•Discrete graphics support for PCI Express* 2.0 x16 add-in graphics
cards
Audio Intel®High Definition Audio (Intel®HD Audio):
•Realtek* ALC892 audio codec
•Front panel audio header (Intel HD Audio and AC ’97 Audio support)
•S/PDIF audio header
Expansion
Capabilities
•One PCI Express 2.0 x16 add-in card connector
•One PCI Express 2.0 x1 add-in card connector
•One Conventional PCI* bus connector
continued
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Intel Desktop Board DH61WW Product Guide
Table 1. Feature Summary (continued)
Peripheral
Interfaces
•Six USB 2.0 ports:
―Four USB 2.0 ports are implemented with stacked back panel
connectors
―Two USB 2.0 front panel ports are implemented through a dual-
port internal header
•Four SATA 3 Gb/s ports through the Intel H61 Express Chipset
•One serial port header
•One parallel port back panel connector
•One PS/2* back panel connector for mouse/keyboard support
LAN Support •Intel®82579V Gigabit (10/100/1000 Mb/s) Ethernet LAN controller
Legacy I/O •Nuvoton* W83677HG-i I/O controller for hardware management
and serial port, parallel port, and PS/2 support
BIOS •Intel®BIOS resident in an SPI Flash device
•Support for Advanced Configuration and Power Interface (ACPI),
Plug and Play, and SMBIOS
Instantly Available
PC Technology
•Support for PCI Local Bus Specification, Revision 2.2
•Support for PCI Express Base Specification, Revision 2.0
•Suspend to RAM support
•Wake on Conventional PCI, PCI Express, LAN, front panel, serial,
USB ports, and PS/2
Hardware
Monitoring
•Hardware monitoring through the Nuvoton I/O controller
•Voltage sense to detect out of range power supply voltages
•Thermal sense to detect out of range thermal values
•Two fan headers using PWM control
•4-pin headers for processor and rear chassis fans
•4-wire and 3-wire (linear) fan speed control support for the rear
chassis fan header
•Support for Platform Environmental Control Interface (PECI)
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Desktop Board Features
Supported Operating Systems
The Desktop Board supports the following operating systems:
•Microsoft Windows* 7 Ultimate 64-bit edition
•Microsoft Windows 7 Ultimate 32-bit edition
•Microsoft Windows 7 Professional 64-bit edition
•Microsoft Windows 7 Professional 32-bit edition
•Microsoft Windows 7 Home Premium 64-bit edition
•Microsoft Windows 7 Home Premium 32-bit edition
•Microsoft Windows 7 Starter 64-bit edition
•Microsoft Windows 7 Starter 32-bit edition
•Microsoft Windows Vista* Ultimate 32-bit edition
•Microsoft Windows Vista Business 32-bit edition
•Microsoft Windows Vista Home Premium 32-bit edition
•Microsoft Windows Vista Home Basic 32-bit edition
•Microsoft Windows Vista Ultimate 64-bit edition
•Microsoft Windows Vista Business 64-bit edition
•Microsoft Windows Vista Home Premium 64-bit edition
•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
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Intel Desktop Board DH61WW Product Guide
Desktop Board Components
Figure 1 shows the approximate location of the major components on Intel Desktop
Board DH61WW.
Figure 1. Intel Desktop Board DH61WW Components
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Desktop Board Features
Table 2. Intel Desktop Board DH61WW Components
Label Description
A Conventional PCI bus add-in card connector
B Chassis intrusion header
C S/PDIF header
D PCI Express 2.0 x1 add-in card connector
E Battery
F PCI Express 2.0 x16 add-in card connector
G Back panel connectors
H Standby power indicator LED
I 12 V processor core voltage connector (2 x 2 pin)
J Rear chassis fan header
K Speaker
L Processor socket
M Processor fan header
N DDR3 DIMM 1 socket
O DDR3 DIMM 2 socket
P Trusted Platform Module (TPM) header
Q Main power connector (2 x 12 pin)
R SATA connectors
S BIOS configuration jumper block
T Front panel header
U Serial port header
V Front panel USB 2.0 header
W Front panel audio header
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Intel Desktop Board DH61WW Product Guide
Online Support
For more information on Intel Desktop Board DH61WW consult the following online
resources:
•Intel Desktop Board DH61WW http://www.intel.com/products/motherboard/index.ht
m
•Desktop Board Support http://www.intel.com/p/en_US/support?iid=hdr+supp
ort
•Available configurations for Intel
Desktop Board DH61WW
http://ark.intel.com
•Supported processors http://processormatch.intel.com
•Chipset information http://www.intel.com/products/desktop/chipsets/inde
x.htm
•BIOS and driver updates http://downloadcenter.intel.com/
•Integration information http://www.intel.com/support/go/buildit
Processor
CAUTION
Failure to use an 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.
Intel Desktop Board DH61WW supports Intel Core i7, Intel Core i5, Intel Core i3, and
Intel Pentium processors in the LGA1155 package. Processors are not included with
the Desktop Board and must be purchased separately. The processor connects to the
Desktop Board through an LGA1155 socket.
For information on supported processors for Intel Desktop Board DH61WW, go
to http://processormatch.intel.com.
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Desktop Board Features
Intel®H61 Express Chipset
The Intel H61 Express Chipset, consisting of the Intel H61 Platform Controller Hub
(PCH), provides interfaces to the processor and the USB, SATA, LPC, audio, network,
display, and PCI Express interfaces. The PCH is a centralized controller for the board’s
I/O paths.
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 board has two DIMM sockets and supports the following memory features:
•Two independent memory channels with interleaved mode support
•Support for non-ECC, unbuffered, single-sided or double-sided DIMMs with x8
organization
•16 GB maximum total system memory (with 4 Gb memory technology)
•Minimum total system memory: 1 GB using 1 Gb x8 modules
•Serial Presence Detect
•DDR3 1333 MHz and DDR3 1066 MHz SDRAM DIMMs
NOTE
32-bit operating systems are limited to a maximum of 4 GB of memory. These
operating systems will report less than 4 GB because of the memory used by add-in
graphics cards and other system resources.
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Intel Desktop Board DH61WW Product Guide
Graphics Subsystem
The board supports either integrated graphics (Intel Graphics Technology) or PCI
Express 2.0 x16 graphics.
Integrated Graphics
The board supports integrated graphics through the Intel®Flexible Display Interface
(Intel®FDI) for processors with Intel Graphics Technology.
Analog Display (VGA)
The VGA port supports analog displays. The maximum supported resolution is 2048 x
1536 (QXGA) at a 75 Hz refresh rate. The VGA port is enabled for POST whenever a
monitor is attached, regardless of the DVI-D connector status.
PCI Express* x16 Graphics
Intel Core i7, Intel Core i5, Intel Core i3, and Intel Pentium processors in an LGA1155
package support discrete add-in graphics cards via the PCI Express 2.0 x16 add-in
card connector. The board supports the following PCI Express speeds:
•PCI Express 2 frequency of 2.5 GHz which results in 5.0 Gb/s in each direction
(500 MB/s) per lane. The maximum theoretical bandwidth on the interface is
8 GB/s in each direction, simultaneously, when operating in x16 mode.
•PCI Express 1 frequency of 1.25 GHz resulting in 2.5 Gb/s each direction
(250 MB/s) per lane. The maximum theoretical bandwidth on the interface is
4 GB/s in each direction, simultaneously, when operating in x16 mode.
Audio Subsystem
The board supports Intel High Definition Audio through a Realtek ALC892 audio codec.
The Realtek ALC892-based audio subsystem provides the following features:
•6-channel audio with independent multi-streaming stereo
•Advanced jack sense for the back panel audio connectors that enables the audio
codec to recognize the device that is connected to an audio port. The back panel
audio connectors are capable of retasking according to the user’s definition, or can
be automatically switched depending on the recognized device type.
•Stereo input and output via back panel connectors
•Headphone and Mic in functions for front panel audio connectors
•A signal-to-noise (S/N) ratio of 90 dB
The board provides onboard audio headers and back panel connectors.
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Desktop Board Features
The onboard audio headers include the following:
•Front panel audio (a 2 x 5 pin header that provides headphone and mic in signals
for front panel audio connectors)
•S/PDIF audio header (1 x 4 pin header)
Front panel headphone output is supported by a separate audio channel pair, allowing
multi-streaming audio configurations such as simultaneous surround sound playback
and stereo audio conferencing (through speakers connected to the back panel audio
connectors and a headset connected to the front panel audio connectors).
The onboard internal mono speaker header allows connection to an internal, low-
power speaker for basic system sound capability. The subsystem is capable of driving
a speaker load of 8 Ωat 1 W (rms) or 4 Ωat 1.5 W (rms).
The onboard S/PDIF header allows connection to coaxial or optical adapters for digital
audio output.
The back panel audio connectors are configurable through the audio device drivers.
Audio software and drivers are available from http://downloadcenter.intel.com/.
LAN Subsystem
The LAN subsystem includes:
•Intel 82579V Gigabit (10/100/1000 Mb/s) Ethernet LAN controller
•RJ-45 LAN connector with integrated status LEDs
LAN software and drivers are available at http://downloadcenter.intel.com/.
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 as shown in Table 3.
Figure 2. LAN Status LEDs
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Intel Desktop Board DH61WW Product Guide
Table 3. LAN Status LEDs States
LED LED Color LED State Indicates
A (Link/Activity) Green Off LAN link is not established
On LAN link is established
Blinking LAN activity is occurring
B (Link Speed) N/A Off 10 Mb/s data rate
Green On 100 Mb/s data rate
Yellow On 1000 Mb/s data rate
USB Support
The Desktop Board supports USB 2.0. There are 6 USB 2.0 ports (four ports routed to
back panel connectors and two ports routed to an onboard header). The USB 2.0
ports are high-speed, full-speed, and low-speed capable. USB 2.0 support requires
both an operating system and drivers that fully support USB 2.0 transfer rates.
SATA Support
The board provides four SATA 3.0 Gb/s channels, through the PCH, which support one
device per channel.
Expandability
Intel Desktop Board DH61WW provides the following expansion capability:
•One PCI Express 2.0 x16 interface
•One PCI Express 2.0 x1 interface
•One Conventional PCI bus interface
Legacy I/O
The board’s Legacy I/O Controller provides the following legacy features:
•PS/2 back panel connector for mouse/keyboard support
•One serial port header
•One parallel port connector on the back panel
•Serial IRQ interface compatible with serialized IRQ support for Conventional PCI
bus systems
•Intelligent power management, including a programmable wake-up event interface
•Conventional PCI bus power management support
The BIOS Setup program provides configuration options for the Legacy I/O controller.
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Desktop Board Features
BIOS
The BIOS provides the Power-On Self-Test (POST), the BIOS Setup program, and the
PCI/PCI Express and SATA auto-configuration utilities. The BIOS is stored in the Serial
Peripheral Interface (SPI) Flash memory device.
The BIOS can be updated by following the instructions in Chapter 3 starting on
page 59.
SATA Auto Configuration
If you install a SATA device (such as a hard disk 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
SATA device. You can override the auto-configuration options by specifying manual
configuration in the BIOS Setup program.
PCI*/PCI Express Auto Configuration
If you install a Conventional PCI or 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 Conventional PCI or
PCI Express add-in card.
BIOS 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.
For instructions on resetting the password, go to Clearing Passwords on page 52.
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Intel Desktop Board DH61WW Product Guide
Trusted Platform Module (TPM) Support
Intel Desktop Board DH61WW provides a header to connect to an external TPM. The
header is shown in Figure 1, P on page 12 and the header pinout is listed in Table 8 on
page 45. TPMs are designed to enhance platform security by providing a protected
space for key operations and other security critical tasks. Using both hardware and
software, the TPM protects encryption and signature keys at their most vulnerable
stages—operations when the keys are being used unencrypted in plain-text form.
TPMs shield unencrypted keys and platform authentication information from software-
based attacks.
Fan Speed Control and Hardware Monitoring
The features of the hardware monitoring and fan speed control include:
•Thermal sensors in the processor and the Intel PCH, as well as near the processor
voltage regulators and system memory
•Monitoring of system voltages to detect levels above or below acceptable values
•Thermally monitored closed-loop fan control for all three fans that can adjust fan
speed as needed
•Support for 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.
Power Management
Power management is implemented at several levels, including software support
through the Advanced Configuration and Power Interface (ACPI) and the following
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
•PCI Power Management Event signal (PME#) wakeup support
•PCI Express WAKE# signal support
•Wake from serial devices
•Wake from PS/2 devices
Software 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.
20