-001 First release of the Intel® Desktop Board DQ45EK Product Guide June 2008
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
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 DQ45EK 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://intel.com/ or by calling 1-800-548-4725.
This Product Guide gives information about board layout, component installation, BIOS
update, and regulatory requirements for Intel
®
Desktop Board DQ45EK.
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
4 Configuring for RAID (Intel
information about configuring your system for RAID
5 Configuring for Intel
configuring your system for Intel Rapid Recover Technology
A Error Messages and Indicators: information about BIOS error messages and beep
codes
B Regulatory Compliance: safety standards, regulations, and product certifications
®
®
Matrix Storage Technology (Intel® MST)):
Rapid Recover Technology (Intel® RRT): information about
iii
Intel Desktop Board DQ45EK Product Guide
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.
Terminology
The table below gives descriptions of some common terms used in the product guide.
Figure 1 shows the approximate location of the major components on Intel Desktop
Board DQ45EK.
Figure 1. Intel Desktop Board DQ45EK Components
11
Intel Desktop Board DQ45EK Product Guide
Table 2. Intel Desktop Board DQ45EK Components
Label Description
A Front panel audio header
B Back panel connectors
C 12 V processor core voltage connector (2 x 2 pin)
D High-speed USB 2.0 headers (2)
D BIOS configuration jumper block
F Chassis intrusion header
G Processor socket
H Front chassis fan header (3-pin)
I Processor fan header (4-pin)
J Serial header
K Main power connector (2 x 12 pin)
L Battery
M Speaker
N DDR2 DIMM 0 socket (channel B)
O DDR2 DIMM 0 socket (channel A)
P Alternate front panel power LED header
Q Front panel header
R Serial ATA connectors (4)
S PCI Express x1 connector
For more information about Intel Desktop Board DQ45EK, go to
http://intel.com/design/motherbd.
12
Desktop Board Features
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 DQ45EK 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.
Go to the following locations for more information about:
• Instructions on installing or upgrading the processor, page 33 in Chapter 2
• Supported
processors for Intel Desk
http://processormatch.intel.com
top Board DQ45EK,
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.
⎯ Non-ECC DDR2 800 MHz/667 MHz, 1.8 V memory
⎯ Serial Presence Detect (SPD)
⎯ Unbuffered, non-registered single or double-sided DIMMs
⎯ Memory configurations listed below:
• Up to 2.0 GB utilizing 512 Mb or 1 Gb technology
• Up to 4.0 GB utilizing 1 Gb technology
• Double-sided DIMMs with x16 organization are not supported
13
Intel Desktop Board DQ45EK Product Guide
NOTE
System resources and hardware (such as PCI Express) require physical memory
address locations that can reduce available addressable system memory. This could
result in a reduction of as much as 1 GB or more of physical addressable memory
being available to the operating system and applications, depending on the system
configuration and operating system.
Go to the following locations for more information about:
The Intel Q45 Express Chipset consists of the following devices:
•Intel 82Q45 Express Chipset Graphics and Memory Controller Hub (GMCH) with
Direct Media Interface (DMI)
•Intel 82801JDO I/O Controller Hub (ICH10DO) with DMI
The GMCH component provides interfaces to the processor, memory, PCI Express, and
the DMI interconnect. The component also provides integrated graphics capabilities
supporting 3D, 2D, and display capabilities. ICH10DO is a centralized controller for
the board’s I/O paths.
For more information on the Intel Q45 Express Chipset go to
http://developer.intel.com/products/chipsets/
14
Desktop Board Features
Intel Q45 Graphics Subsystem
The Intel Q45 Express Chipset provides DVI-D and DVI-I support via the integrated
Intel Graphics Media Accelerator 4500 (Intel GMA 4500) graphics controller.
The Intel GMA 4500 graphics controller has the following features:
• Advanced graphics performance, including:
⎯ DirectX10* and OpenGL* 2.0 compliant
⎯ Shader Model 4.0 support
• Enhanced video playback support, including:
⎯ Support for playback of Blu-ray Disc* technology DVDs
Microsoft Windows Vista* only
Hardware acceleration supported for MPEG-2 only
⎯ Software DVD at 30 fps full screen
⎯ Dynamic Video Memory Technology (DVMT) 5.0
• Advanced display support, including:
⎯ DVI specification 1.0 compliance
⎯ Dual independent display support via the DVI-I and DVI-D back panel
connectors
⎯ High Definition Content Protection (HDCP) version 1.1 support
⎯ Support for all HD display resolutions including 720p, 1080i, and 1080p
⎯ Support for digital and analog displays up to 2048 x 1536 at 75 Hz refresh rate
(QXGA); also supports 1920 x 1080 resolution for full High Definition video
playback quality
DVI Support
The DVI-I port supports both digital and analog DVI displays while the DVI-D port
supports digital DVI displays only. The maximum supported resolution is 2048 x 1536
at 75 Hz refresh rate (QXGA). DVI analog output can be converted to VGA with a DVIto-VGA connector.
15
Intel Desktop Board DQ45EK Product Guide
Audio Subsystem
The onboard audio subsystem consists of the following:
• Intel ICH10DO I/O controller hub
• Analog Devices AD1882 audio codec
• Intel High Definition Audio front panel audio header
• Back panel audio connectors
The audio subsystem supports the following features:
• A signal-to-noise (S/N) ratio of 95 dB
• Independent multi-streaming 6-channel (5.1) audio (using the back panel audio
connectors)
•Independent 2-channel stereo audio streams (using the Intel High Definition front
panel audio header)
Go to the following locations for more information about:
• Audio drivers and utilities http://support.intel.com/support/motherboards/desktop/
• Location of the onboard audio headers, Figure 18 on page 43
• The location and description of the back
page 47
Table 3 lists the supported functions for the front panel and back panel audio jacks.
panel audio connectors, Figure 19 on
Table 3. Audio Jack Retasking Support
Jack Mic Line out Headphones Line in
Front Panel
Green No Yes Yes No No No
Pink Yes No No No No No
Back Panel
Blue No No No Yes Yes No
Green No Yes Yes No No No
Pink Yes No No No No Yes
Rear
Surround
Center/
Subwoofer
Legacy Input/Output (I/O) Controller
The I/O controller features the following:
• Low pin count (LPC) interface
• One serial port interface via an onboard header
• Serial IRQ interface compatible with serialized IRQ support for PCI Express systems
• Intelligent power management, including a programmable wake up event interface
• PCI Express power management support
16
Desktop Board Features
LAN Subsystem
The LAN subsystem includes:
®
• Intel
• Intel 82567LM Gigabit (10/100/1000 Mb/s) Ethernet LAN controller with support
• RJ-45 LAN connector with integrated status LEDs
The subsystem also features:
• CSMA/CD protocol engine
• LAN connect interface between ICH10DO and the LAN controller
• PCI bus power management
For information about LAN software and drivers go to
⎯ Intel AMT 5.0
⎯ Alert Standard Format (ASF) 2.0
⎯ Virtual LAN driver support for Intel
partitions
®
Virtualization Technology (Intel® VT)
LAN Subsystem Software
For LAN software and drivers, refer to the Intel Desktop Board DQ45EK link on Intel’s
World Wide Web site at http://support.intel.com/support/motherboards/desktop
LAN Status Indicators
Two LEDs are built into the RJ-45 LAN connector panel (see Figure 2). These LEDs
indicate the operating states of the LAN.
Figure 2. LAN Status LEDs
.
17
Intel Desktop Board DQ45EK Product Guide
Table 4 describes the LED states when the board is powered up and the LAN
subsystem is operating.
Table 4. LAN Connector LEDs
LED LED Color LED State Indicates
A (Link) Off LAN link is not established
Blinking LAN activity is occurring
B (Speed)
Green
On LAN link is established
N/A Off 10 Mb/s data rate
Green On 100 Mb/s data rate
Yellow On 1000 Mb/s data rate
Intel® Active Management Technology
®
(Intel
Intel AMT 5.0 offers IT organizations tamper-resistant and persistent management
capabilities. Intel AMT is a hardware-based solution that uses out of band
communication to manage access to client systems in addition to offering encrypted
and persistent asset management and remote diagnostics and/or recovery capabilities
for networked platforms. With Intel AMT, IT organizations can easily get accurate
platform information, and can perform remote updating, diagnostics, debugging and
repair of a system, regardless of the state of the operating system or the power state
of the system.
AMT) 5.0
The Intel AMT subsystem consists of:
•ARC4 microcontroller embedded in the Intel 82Q45 Graphics and Memory
Controller Hub (GMCH)
• ICH10DO (Intel
• Intel 82567LM Gigabit (10/100/1000 Mb/s) Ethernet LAN controller
• Channel A DIMM(s)
• BIOS/SPI Flash
• On-board Intel AMT status indicator
NOTE
Software with Intel AMT capability is required to take advantage of the Intel AMT
platform management capabilities.
Related Links:
Go to the following link for information about Intel AMT and the availability of thirdparty software: http://www.intel.com/technology/platform-technology/intel-amt
®
Management Engine function)
18
Desktop Board Features
Intel AMT Status Indicator
The Intel AMT status indicator (red LED) shows the current state of the
Intel Management Engine. Table 5 shows the states of the Intel Management Engine
as indicated by the LED. Fi
gure 3 shows the location of the Intel AMT status indicator.
Table 5. Intel AM
LED State Indicates
Off Intel Management Engine is in the off state
On Intel Management Engine is in the on state and fully functional
Blinking Intel Management Engine is in the M1 state; system is out of band; Intel
T Status Indicator
Management Engine is functional
Figure 3. Intel AMT Status Indicator
19
Intel Desktop Board DQ45EK Product Guide
Intel® Virtualization Technology (Intel® VT)
Intel® Virtualization Technology (Intel® VT) consists of components that support
virtualization of platforms based on Intel processors, thereby enabling the running of
multiple operating systems and applications in independent partitions. Each partition
behaves like a virtual machine (VM) and provides isolation and protection across
partitions. This hardware-based virtualization solution, along with virtualization
software, enables multiple usages such as server consolidation, activity partitioning,
workload isolation, embedded management, legacy software migration, and disaster
recovery.
•Intel Virtualization Technology (Intel VT)
Hardware support for processor virtualization enables simple, robust and reliable
VMM software. VMM software relies on hardware support on operational details for
the handling of events, exceptions, and resources allocated to virtual machines.
•Intel Virtualization Technology (Intel® VT) for Directed I/O (Intel® VT-d)
Intel VT-d provides additional performance, security and flexibility by providing the
VMM with the following capabilities:
⎯ I/O device assignment: for flexibly assigning I/O devices to VMs and extending
the protection and isolation properties of VMs for I/O operations.
⎯ DMA remapping: for supporting independent address translations for Direct
Memory Accesses (DMA) from devices.
⎯ Interrupt remapping: for supporting isolation and routing of interrupts from
devices and external interrupt controllers to appropriate VMs.
⎯ Reliability: for recording and reporting to system software DMA and interrupt
errors that may otherwise corrupt memory or impact VM isolation.
NOTE
Intel VT requires the use of a processor with Intel VT support. Additionally, a thirdparty VMM may also be required.
20
Desktop Board Features
Intel® Trusted Execution Technology
®
(Intel
TXT)
Intel® Trusted Execution Technology (Intel® TXT) is a highly versatile set of hardware
extensions to Intel
the platform security capabilities. Intel TXT will provide a hardware-based security
foundation that will help enable greater levels of protection for information stored,
processed and exchanged on the PC.
•Protected execution and memory spaces where sensitive data can be processed out
of view of any other software.
•Sealed storage shields encryption keys and other data from attack while in use or
stored.
•Attestation enables a system to provide assurance that it has correctly invoked the
Intel Trusted Execution Technology environment, as well as enable a verified
measurement of the software running in the protected space.
• Measured launch capability to help:
⎯ Reduce IT support costs with improved services
⎯ Enable decentralized or remote computing
⎯ Verify platform configuration with a higher level of assurance
• Memory protection to help:
⎯ Enhance protection of system resources
⎯ Increase confidentiality and integrity of data
⎯ Improve assurance of data transfers and resources
⎯ Improve protection of sensitive information
®
processors and chipsets that, with appropriate software, enhance
These Intel Trusted Execution Technology capabilities enable more secure platforms to
address the increasing frequency and sophistication of software-based attacks.
NOTE
Intel TXT requires the use of a processor with Intel TXT support. Additionally, thirdparty software may also be required.
21
Intel Desktop Board DQ45EK Product Guide
Hi-Speed USB 2.0 Support
The Desktop Board supports up to 10 USB 2.0 ports (six ports routed to the back
panel and four ports routed to two internal headers) via ICH10DO. 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.
Serial ATA
The Desktop Board supports five Serial ATA channels (3.0 Gb/s) via ICH10DO,
connecting one device per channel. One channel is configured as an eSATA channel.
Serial ATA RAID
The ICH10DO supports Intel® Matrix Storage Technology which enables the following
RAID (Redundant Array of Independent Drives) levels:
• RAID 0 - data striping
• RAID 1 - data mirroring
• RAID 0+1 (or RAID 10) - data striping and mirroring
• RAID 5 - distributed parity
For information on configuring your system for RAID using Intel Matrix Storage
Technology see Chapter 4.
Intel® Rapid Recover Technology (Intel® RRT)
The Desktop Board incorporates Intel Rapid Recover Technology which enables fast
and easy recovery of your data in the event of a hard drive failure. It allows you to
maintain a complete copy of your primary or master drive onto a second hard drive,
the recovery drive. If the master hard drive should fail, either from a mechanical
failure or the result of a virus, recovery is as simple as booting from the recovery
drive. The recovery drive can be attached to your system via any standard SATA or
eSATA connection.
Intel Rapid Recover Technology also provides the added benefit of allowing the
recovery drive to be mounted as a read-only volume so you can quickly copy files from
the recovery drive when individual files need to be recovered.
For information on configuring your system for Intel Rapid Recover Technology see
Chapter 5.
22
Desktop Board Features
Expandability
For system expansion, the Desktop Board provides one PCI Express 1.1 x1 connector.
BIOS
The BIOS provides the Power-On Self-Test (POST), the BIOS Setup program, the PCI
Express and SATA auto-configuration utilities, and the video BIOS. The BIOS is stored
in the Serial Peripheral Interface (SPI) Flash device.
The BIOS can be updated by following the instructions on page 59 in Chapter 3.
Serial ATA Auto Configuration
If you install a Serial ATA 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 device. You can override the auto-configuration options by specifying
manual configuration in the BIOS Setup program.
PCI Express* Auto Configuration
If you install a PCI Express add-in card in your computer, the 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 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.
For instructions on resetting the password, see “Clearing BIOS Security Pas
page 51.
swords” on
23
Intel Desktop Board DQ45EK Product Guide
Intel® Trusted Platform Module (Intel® TPM)
The Intel TPM component is designed to enhance platform security above and beyond
the capabilities of today’s software 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. The TPM is specifically designed
to shield unencrypted keys and platform authentication information from softwarebased attacks.
NOTE
The Intel TPM uses the onboard coin-cell battery (CR2032) to maintain its monotonic
counters. One major function of the monotonic counters is for anti-replay protection
of the internal Intel TPM data. If the battery is removed or exhausted, the Intel TPM
data will be deleted in accordance with Trusted Computing Group guidelines. Please
read the Intel TPM user guide and back-up Intel TPM keys and data before removing
the battery.
Hardware Management Features
The hardware management features of Intel Desktop Board DQ45EK 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
Fan Speed, Thermal, and Voltage Monitoring and
Control
The board’s fan speed, thermal, and voltage monitoring and control features include
the following:
• Monitoring of power supply voltages to detect levels above and below acceptable
values
• Intel Quiet System Technology fan speed control, delivering acoustically-optimized
thermal management
NOTE
Memory must be installed in the Channel A socket to enable Intel Quiet
System Technology.
• Thermally monitored closed-loop fan control, for all onboard fans, that can adjust
fan speed according to thermal conditions.
• Fan speed controllers and sensors integrated into the ICH10DO
24
Desktop Board Features
• Thermal sensors in the processor, GMCH, and ICH10DO, plus an onboard remote
sensor
NOTE
The minimum thermal reporting threshold for the GMCH is 66 °C. The GMCH thermal
sensor will display 66 °C until the temperature rises above this point.
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 Figure 18 for
the location of the c
sis intrusion header.
has
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# signal wake-up support
• ENERGY STAR qualified
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.
Hardware 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.
25
Intel Desktop Board DQ45EK Product Guide
The Desktop Board has two power connectors. See Figure 21 on page 49 for the
location of the power connectors.
Fan Headers
The function/operation of the fans is as follows:
• The fans are on when the computer is in the ACPI S0 state.
• The fans are off when the computer is in the ACPI S3, S4, or S5 state.
• All fan headers support closed-loop fan control that can adjust the fan speed based
on thermal conditions.
•All fan headers have a +12 V DC connection.
The Desktop Board has a 4-pin processor fan header and a 3-pin chassis fan header.
LAN Wake Capabilities
CAUTION
For LAN wake capabilities, 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.
LAN wakeup capabilities enable remote wake-up of the computer through a network.
The LAN subsystem monitors network traffic and upon detecting a Magic Packet*
frame, it asserts a wake-up signal that powers up the computer.
Instantly Available PC Technology
CAUTIONS
For Instantly Available PC technology, the 5 V standby line for the power supply must
be capable of delivering adequate +5 V standby current. Failure to provide adequate
standby current when using this feature can damage the power supply and/or effect
ACPI S3 sleep state functionality.
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 Express
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-toRAM) sleep state. While in the S3 sleep state, the computer will appear to be off. If
the computer has a dual-colored power LED on the front panel, the sleep state is
indicated by the LED turning amber. When signaled by a wake-up device or event, the
computer quickly returns to its last known awake state.
The Desktop Board supports the PCI Bus Power Management Interface Specification.
Add-in cards that support this specification can participate in power management and
can be used to wake the computer.
26
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