Intel DP965LT User manual

Intel®Desktop Board DP965LT
Product Guide
Order Number: D46810-003

Revision History
Revision Revision History Date
-001 First release of the Intel®Desktop Board DP965LT Product Guide June 2006
-002 Second release of the Intel®Desktop Board DP965LT Product Guide September 2006
-003 Added operating system support December 2006

If an FCC declaration of conformity marking is present on the board, the following statement applies:
FCC Declaration of Conformity
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1)
this device may not cause harmful interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
For questions related to the EMC performance of this product, contact:
Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124
1-800-628-8686
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to
Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses, and can radiate radio frequency
energy and, if not installed and used in accordance with the instructions, may cause harmful interference to
radio communications. However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try to correct the interference by
one or more of the following measures:
•Reorient or relocate the receiving antenna.
•Increase the separation between the equipment and the receiver.
•Connect the equipment to an outlet on a circuit other than the one to which the receiver is connected.
•Consult the dealer or an experienced radio/TV technician for help.
Any changes or modifications to the equipment not expressly approved by Intel Corporation could void the
user’s authority to operate the equipment.
Tested to comply with FCC standards for home or office use.
Canadian Department of Communications Compliance Statement
This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus set
out in the Radio Interference Regulations of the Canadian Department of Communications.
Le présent appareil numerique német pas de bruits radioélectriques dépassant les limites applicables aux
appareils numériques de la classe B prescrites dans le Réglement sur le broullage radioélectrique édicté par
le ministére des Communications du Canada.
Disclaimer
INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH INTEL®PRODUCTS. NO LICENSE,
EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS
GRANTED BY THIS DOCUMENT. EXCEPT AS PROVIDED IN INTEL’S TERMS AND CONDITIONS OF SALE FOR
SUCH PRODUCTS, INTEL ASSUMES NO LIABILITY WHATSOEVER, AND INTEL DISCLAIMS ANY EXPRESS OR
IMPLIED WARRANTY, RELATING TO SALE AND/OR USE OF INTEL PRODUCTS INCLUDING LIABILITY OR
WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, OR INFRINGEMENT
OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. Intel products are not intended
for use in medical, life saving, or life sustaining applications. Intel may make changes to specifications and
product descriptions at any time, without notice.
Desktop Board DP965LT 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.
Copyright © 2006, Intel Corporation. All rights reserved.

iii
Preface
This Product Guide gives information about board layout, component installation, BIOS
update, and regulatory requirements for Intel®Desktop Board DP965LT.
Intended Audience
The Product Guide is intended for technically qualified personnel. It is not intended for
general audiences.
Use Only for Intended Applications
All Intel desktop boards are evaluated as Information Technology Equipment (I.T.E.)
for use in personal computers (PC) for installation in homes, offices, schools, computer
rooms, and similar locations. The suitability of this product for other PC or embedded
non-PC applications or other environments, such as medical, industrial, alarm systems,
test equipment, etc. may not be supported without further evaluation by Intel.
Document Organization
The chapters in this Product Guide are arranged as follows:
1 Desktop Board Features: a summary of product features
2 Installing and Replacing Desktop Board Components: instructions on how to install
the desktop board and other hardware components
3 Updating the BIOS: instructions on how to update the BIOS
A Error Messages and Indicators: information about BIOS error messages and beep
codes
B Regulatory Compliance: safety and EMC regulations and product certifications
Conventions
The following conventions are used in this manual:
CAUTION
Cautions warn the user about how to prevent damage to hardware or loss of data.
NOTE
Notes call attention to important information.

Intel Desktop Board DP965LT Product Guide
iv
Terminology
The table below gives descriptions of some common terms used in the product guide.
Term Description
GB Gigabyte (1,073,741,824 bytes)
GHz Gigahertz (one billion hertz)
KB Kilobyte (1024 bytes)
MB Megabyte (1,048,576 bytes)
Mbit Megabit (1,048,576 bits)
MHz Megahertz (one million hertz)
Box Contents
•Intel Desktop Board DP965LT
•I/O shield
•One ATA-66/100 cable
•Two locking Serial ATA cables
•One Floppy Drive cable
•Quick Reference poster
•Configuration and battery caution statement label
•Intel®Express Installer driver CD-ROM
•Intel Express Installer software CD-ROM

v
Contents
1Desktop Board Features
Supported Operating Systems .............................................................................. 10
Desktop Board Components.................................................................................. 11
Processor ...........................................................................................................13
Main Memory......................................................................................................14
Intel®P965 Express Chipset ................................................................................. 15
Onboard Audio Subsystem ................................................................................... 15
Input/Output (I/O) Controller ............................................................................... 16
LAN Subsystem...................................................................................................16
LAN Subsystem Software.............................................................................. 16
RJ-45 LAN Connector LEDs ...........................................................................16
Hi-Speed USB 2.0 Support ................................................................................... 17
Enhanced IDE Interface ....................................................................................... 17
Serial ATA ..........................................................................................................18
Expandability......................................................................................................18
BIOS .................................................................................................................18
Serial ATA and IDE Auto Configuration ...........................................................18
PCI and PCI Express* Auto Configuration .......................................................18
Security Passwords ...................................................................................... 19
Hardware Management Features ...........................................................................19
Hardware Monitoring and Fan Speed Control................................................... 19
Chassis Intrusion......................................................................................... 20
Power Management Features ................................................................................ 20
ACPI .......................................................................................................... 20
Power Connectors........................................................................................20
Fan Headers ...............................................................................................21
LAN Wake Capabilities..................................................................................21
Instantly Available PC Technology.................................................................. 21
+5 V Standby Power Indicator LED ................................................................22
Wake from USB...........................................................................................23
Wake from PS/2 Keyboard/Mouse.................................................................. 23
PME# Signal Wake-up Support...................................................................... 23
WAKE# Signal Wake-up Support ...................................................................23
Speaker ............................................................................................................. 23
Battery .............................................................................................................. 23
Real-Time Clock .................................................................................................. 23
2Installing and Replacing Desktop Board Components
Before You Begin................................................................................................. 25
Installation Precautions........................................................................................ 26
Prevent Power Supply Overload.....................................................................26
Observe Safety and Regulatory Requirements ................................................. 26
Installing the I/O Shield .......................................................................................27
Installing and Removing the Desktop Board............................................................ 28

Intel Desktop Board DP965LT Product Guide
vi
Installing and Removing a Processor...................................................................... 29
Installing a Processor ................................................................................... 29
Installing the Processor Fan Heat Sink............................................................32
Connecting the Processor Fan Heat Sink Cable ................................................ 32
Removing the Processor ............................................................................... 33
Installing and Removing Memory .......................................................................... 33
Guidelines for Dual Channel Memory Configuration .......................................... 33
Two or Four DIMMs ..............................................................................33
Three DIMMs............................................................................................... 34
Installing DIMMs.......................................................................................... 35
Removing DIMMs.........................................................................................37
Installing and Removing a PCI Express x16 Card.....................................................38
Installing a PCI Express x16 Card ..................................................................38
Removing the PCI Express x16 Card ..............................................................39
Connecting the IDE Cable..................................................................................... 40
Connecting the Serial ATA (SATA) Cable ................................................................ 41
Connecting to Internal Headers............................................................................. 42
Connecting to the HD Audio Link Header ........................................................ 43
Connecting to the IEEE 1394a Header ............................................................ 43
Installing a Front Panel Audio Solution for Intel®High Definition Audio............... 43
Connecting to the Serial Port Header.............................................................. 45
Connecting to the Alternate Front Panel Power LED Header............................... 45
Connecting to the Front Panel Header ............................................................ 46
Connecting to the USB 2.0 Headers ............................................................... 46
Connecting to the Flexible Audio System ................................................................ 47
Connecting Chassis Fan and Power Cables..............................................................48
Connecting Chassis Fan Cables...................................................................... 48
Connecting Power Cables.............................................................................. 49
Other Connectors and Headers .............................................................................50
Setting the BIOS Configuration Jumper .................................................................. 51
Clearing Passwords..............................................................................................52
Back Panel Connectors......................................................................................... 53
3Updating the BIOS
Updating the BIOS with the Intel®Express BIOS Update Utility................................. 59
Updating the BIOS with the ISO Image BIOS Update File or the Iflash Memory
Update Utility................................................................................................60
Obtaining the BIOS Update File ..................................................................... 60
Updating the BIOS with the ISO Image BIOS Update File.................................. 60
Updating the BIOS with Iflash ....................................................................... 61
Recovering the BIOS .................................................................................... 62
AError Messages and Indicators
BIOS Beep Codes ................................................................................................ 63
BIOS Error Messages ........................................................................................... 63

Contents
vii
BRegulatory Compliance
Safety Regulations .............................................................................................. 65
Place Battery Marking ..................................................................................65
European Union Declaration of Conformity Statement .............................................. 66
Product Ecology Statements ................................................................................. 67
Lead-Free Desktop Board .............................................................................70
EMC Regulations .................................................................................................71
Ensure Electromagnetic Compatibility (EMC) Compliance .................................. 72
Product Certifications........................................................................................... 73
Board-Level Certification Markings ................................................................. 73
Chassis and Component Certifications ............................................................ 74
Figures
1. Desktop Board DP965LT Components............................................................... 11
2. LAN Connector LEDs ......................................................................................16
3. Location of Standby Power Indicator ................................................................22
4. Installing the I/O Shield ................................................................................. 27
5. Desktop Board DP965LT Mounting Screw Hole Locations .................................... 28
6. Lift Socket Lever ........................................................................................... 29
7. Lift the Load Plate..........................................................................................29
8. Remove the Protective Socket Cover................................................................ 30
9. Remove the Processor from the Protective Processor Cover ................................30
10. Install Processor ............................................................................................ 31
11. Close the Load Plate....................................................................................... 31
12. Connecting the Processor Fan Heat Sink Cable to the Processor Fan Header.......... 32
13. Dual Channel Memory Configuration Example 1................................................. 33
14. Dual Channel Memory Configuration Example 2................................................. 34
15. Dual Channel Memory Configuration Example 3................................................. 34
16. Use DDR2 DIMMs ..........................................................................................35
17. Installing a DIMM .......................................................................................... 36
18. Installing a PCI Express x16 Card .................................................................... 38
19. Removing a PCI Express x16 Card ................................................................... 39
20. Connecting the IDE Cable ............................................................................... 40
21. Connecting the Serial ATA Cable......................................................................41
22. Internal Headers ...........................................................................................42
23. Back Panel Audio Connectors .......................................................................... 47
24. Location of Chassis Fan Headers......................................................................48
25. Connecting Power Supply Cables ..................................................................... 49
26. Location of Other Connectors and Headers........................................................50
27. Location of the BIOS Configuration Jumper Block...............................................51
28. Back Panel Connectors ................................................................................... 53
29. Removing the Battery .................................................................................... 58

Intel Desktop Board DP965LT Product Guide
viii
Tables
1. Feature Summary............................................................................................9
2. Desktop Board DP965LT Components............................................................... 12
3. LAN Connector LEDs ......................................................................................17
4. HD Audio Link Header Signal Names ................................................................43
5. IEEE 1394a Signal Header Names.................................................................... 43
6. Front Panel Audio Header Signal Names for Intel High Definition Audio................. 43
7. AC ’97 Audio Header Signal Names .................................................................. 44
8. Serial Port Header Signal Names ..................................................................... 45
9. Alternate Front Panel Power LED Header........................................................... 45
10. Front Panel Header ........................................................................................46
11. USB 2.0 Header Signal Names......................................................................... 46
12. Jumper Settings for the BIOS Setup Program Modes .......................................... 51
13. Beep Codes...................................................................................................63
14. BIOS Error Messages ..................................................................................... 63
15. Safety Regulations.........................................................................................65
16. Lead-Free Board Markings .............................................................................. 70
17. EMC Regulations............................................................................................ 71
18. Product Certification Markings ......................................................................... 73

9
1 Desktop Board Features
This chapter briefly describes the main features of Intel®Desktop Board DP965LT.
Table 1 summarizes the major features of the desktop board.
Table 1. Feature Summary
Form Factor ATX (320.04 millimeters [11.60 inches] x 243.84 millimeters
[9.60 inches])
Processor Support for an Intel®processor in the LGA775 package
Main Memory •Four 240-pin, DDR2 1.8 V (only) SDRAM Dual Inline Memory Module
(DIMM) sockets
•800/677/533 MHz single or dual channel DDR2 SDRAM interface
•Support for up to 8 GB of system memory
Chipset Intel®965 Express Chipset consisting of:
•Intel®965 Express Chipset Memory Controller Hub (MCH)
•Intel®82801HB I/O Controller Hub (ICH8)
Graphics One PCI Express* x16 connector supporting PCI Express graphics
cards
Audio •6-channel (5.1) onboard subsystem, featuring:
―Intel®High Definition Audio interface
―SigmaTel* STAC9227 audio codec
•HD Audio Link header
Expansion
Capabilities
•Three PCI Express x1 connectors
•One PCI Express x16 connector
•Three PCI connectors
Peripheral
Interfaces
•Up to 10 USB 2.0 ports
―Six ports routed to the back panel
―Four ports routed to two USB headers
•Up to two IEEE 1394a ports
―One port routed to the back panel
―One port routed to a IEEE 1394a header
•Four Serial ATA (SATA) channels (3.0 Gb/s), via the ICH8, one
device per channel
•One IDE interface with ATA-66/100 support (two devices)
•One diskette drive interface
•One parallel port
•PS/2* keyboard and mouse ports
continued

Intel Desktop Board DP965LT Product Guide
10
Table 1. Feature Summary (continued)
BIOS •Intel®Platform Innovation Framework for extensible firmware
interface
•8 Mbit symmetrical flash memory
•Support for SMBIOS
•Intel®Rapid BIOS Boot
•Intel®Express BIOS Update
Power Management •Support for Advanced Configuration and Power Interface (ACPI)
•Suspend to RAM (STR)
•Wake on USB, PCI Express, PS/2, LAN, and front panel
Hardware
Management
Hardware monitor with:
•Three fan sensing inputs used to monitor fan activity
•Remote diode temperature sensing
•Intel®Quiet System Technology fan speed control
•Voltage sensing to detect out of range values
LAN Support Intel®82566DC Gigabit (10/100/1000 Mb/s) Ethernet LAN controller
Related Links:
For more information about Desktop Board DP965LT, including the Technical Product
Specification (TPS), BIOS updates, and device drivers, go to:
http://support.intel.com/support/motherboards/desktop/
Supported Operating Systems
The desktop board supports the following operating systems:
•Microsoft Windows Vista* Ultimate
•Microsoft Windows Vista Enterprise
•Microsoft Windows Vista Business
•Microsoft Windows Vista Home Premium
•Microsoft Windows Vista Home Basic
•Microsoft Windows Vista Ultimate 64-bit edition
•Microsoft Windows Vista Enterprise 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
•Microsoft Windows 2000

Desktop Board Features
11
Desktop Board Components
Figure 1 shows the approximate location of the major components on Desktop Board
DP965LT.
Figure 1. Desktop Board DP965LT Components

Intel Desktop Board DP965LT Product Guide
12
Table 2. Desktop Board DP965LT Components
Label Description
A PCI bus connector 3
B Auxiliary chassis fan header (4-pin)
C PCI Express x 1 connector 3
D PCI Express x 1 connector 2
E High Definition Audio Link header
F PCI bus connector 2
G Front panel audio header
H PCI bus connector 1
I PCI Express x 1 connector 1
J PCI Express x 16 connector
K Back panel connectors
L 12 V processor core voltage connector (2 x 2 pin )
M Rear chassis fan header (3-pin)
N Processor socket
O Processor fan header (4-pin)
P Serial header
Q Main power connector (2 x 12 pin)
R Diskette drive connector
S DDR2 DIMM 0 sockets
T DDR2 DIMM 1 sockets
U Battery
V Front chassis fan header (3-pin)
W Chassis intrusion header
X BIOS configuration jumper block
Y Alternate front panel power LED header
Z Front panel header
AA Serial ATA connectors
BB IDE connector
CC High-speed USB 2.0 headers
DD Speaker
EE IEEE 1394a header
Related Links:
Go to the following links for more information about:
•Desktop Board DP965LT http://www.intel.com/design/motherbd
http://support.intel.com/support/motherboards/desktop
•Supported processors http://support.intel.com/support/motherboards/desktop
•Audio software and utilities http://www.intel.com/design/motherbd
•LAN software and drivers http://www.intel.com/design/motherbd

Desktop Board Features
13
Processor
CAUTION
Failure to use the appropriate power supply and/or not connecting the 12 V (2 x 2 pin)
power connector to the desktop board may result in damage to the board, or the
system may not function properly.
Desktop Board DP965LT supports an Intel processor in the LGA775 package.
Processors are not included with the desktop board and must be purchased separately.
The processor connects to the desktop board through the LGA775 socket.
The supported processors list for Desktop Board DP965LT is located on the web at:
http://support.intel.com/support/motherboards/desktop/
Related Links:
Go to the following page for more information about:
Instructions on installing or upgrading the processor, page 29 in Chapter 2

Intel Desktop Board DP965LT Product Guide
14
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.
•Four 240-pin Double Data Rate 2 (DDR2) SDRAM Dual Inline Memory Module
(DIMM) connectors with gold-plated contacts.
•Support for:
⎯Unbuffered, non-registered single or double-sided DIMMs
⎯Non-ECC DDR2 memory
⎯DIMM Type and Timings listed below:
Type Timing
DDR2-800 5-5-5 or 6-6-6 only
DDR2-667 5-5-5 only
DDR2-533 4-4-4 only
⎯Serial Presence Detect (SPD) memory only
⎯Memory configurations listed below:
•Up to 2.0 GB utilizing 256 Mb technology
•Up to 4.0 GB utilizing 512 Mb or 1 Gb technology
•Up to 8.0 GB utilizing 1 Gb technology
NOTE
1 Gb memory technology is not supported on DDR2-800 DIMMs.
Intel recommends using memory from the tested memory lists, available at:
http://www.cmtlabs.com/mbsearch.asp
or
http://www.intel.com/products/motherboard/index.htm?iid=HMPAGE+Header_2_Pro
duct_MB
Related Links:
Go to the following links or pages for more information about:
•SDRAM specifications, http://www.intel.com/technology/memory/
•Installing memory, page 33 in Chapter 2

Desktop Board Features
15
Intel®P965 Express Chipset
The Intel P965 Express Chipset consists of the following devices:
•Intel P965 Express Chipset Memory Controller Hub (MCH)
•Intel 82801HB I/O Controller Hub (ICH8)
Related Links:
Go to the following link for more information about the Intel P965 Express Chipset:
http://developer.intel.com/design/nav/pcserver.htm
Onboard Audio Subsystem
Desktop Board DP965LT has a flexible 6-channel (5.1) onboard audio subsystem that
includes a SigmaTel STAC9227 audio codec and an HD Audio Link header.
The audio subsystem features:
•Intel High Definition Audio interface
•Advanced jack sense, for the back panel connectors, that enables the audio codec
to recognize the device that is connected to an audio port and retask the connector
via the audio driver.
•S/N (signal-to-noise) ratio: 95 dB
•Microphone input supporting:
⎯Stereo microphone
⎯Microphone boost
The subsystem includes the following connectors:
•Front panel audio connector, including functionality for:
⎯Line out
⎯Microphone in
•Back panel audio connectors that are configurable through the drivers of the audio
devices:
⎯Line in/retasking jack
⎯Line out/retasking jack
⎯Mic in/retasking jack
Related Links:
Go to the following link or pages for more information about:
•Audio drivers and utilities http://support.intel.com/support/motherboards/desktop/
•Installing the front panel audio solution, page 43
•The location of audio connectors, Figure 23 on page 47

Intel Desktop Board DP965LT Product Guide
16
Input/Output (I/O) Controller
The super I/O controller features the following:
•Low pin count (LPC) interface
•One serial port header
•One parallel port with Extended Capabilities Port (ECP) and Enhanced Parallel Port
(EPP) support
•Serial IRQ interface compatible with serialized IRQ support for PCI systems
•PS/2-style mouse and keyboard interfaces
•Interface for one 1.2 MB or 1.44 MB diskette drive
•Intelligent power management, including a programmable wake up event interface
•PCI power management support
LAN Subsystem
The LAN subsystem, with Intel 82801HB (ICH8) provides the following functions:
•Intel 82566DC Gigabit (10/100/1000 Mb/s) Ethernet LAN controller
•Intel 82801HB I/O Controller Hub (ICH8)
•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 DP965LT link on Intel’s World Wide Web site
at:
http://support.intel.com/support/motherboards/desktop
RJ-45 LAN Connector LEDs
Two LEDs are built into the RJ-45 LAN connector located on the back panel (see
Figure 2). These LEDs indicate the status of the LAN.
Figure 2. LAN Connector LEDs

Desktop Board Features
17
Table 3 describes the LED states when the board is powered up and the LAN
subsystem is operating.
Table 3. LAN Connector LEDs
LED LED Color LED State Indicates
A Off LAN link is not established
Green
On LAN link is established
Blinking LAN activity is occurring
N/A Off 10 Mb/s data rate
Green On 100 Mb/s data rate
B
Yellow On 1000 Mb/s data rate
Hi-Speed USB 2.0 Support
NOTE
Computer systems that have an unshielded cable attached to a USB port might not
meet FCC Class B requirements, even if no device or a low-speed USB device is
attached to the cable. Use a shielded cable that meets the requirements for a
full-speed USB device.
The desktop board supports up to 10 USB 2.0 ports via ICH8 six ports routed to the
back panel and four ports routed to two internal USB 2.0 headers. USB 2.0 ports are
backward compatible with USB 1.1 devices. USB 1.1 devices will function normally at
USB 1.1 speeds.
USB 2.0 support requires both an operating system and drivers that fully support
USB 2.0 transfer rates. Disabling Hi-Speed USB in the BIOS reverts all USB 2.0 ports
to USB 1.1 operation. This may be required to accommodate operating systems that
do not support USB 2.0.
Enhanced IDE Interface
The ICH8’s IDE interface handles the exchange of information between the processor
and peripheral devices such as hard disk drives and CD-ROM drives. The interface
supports:
•Up to two IDE devices (such as hard drives)
•ATAPI-style devices (such as CD-ROM drives)
•Older PIO Mode devices
•Ultra DMA-33 and ATA-66/100 protocols

Intel Desktop Board DP965LT Product Guide
18
Serial ATA
The desktop board supports four Serial ATA channels (3.0 Gb/s) via ICH8, connecting
one device per channel.
Expandability
For system expansion, the desktop board provides the following:
•Three PCI Express x1 connectors
•One PCI Express x 16 connector
•Three PCI bus connectors
BIOS
The BIOS provides the Power-On Self-Test (POST), the BIOS Setup program, the
PCI/PCI Express and IDE auto-configuration utilities, and the video BIOS. The BIOS is
stored in the Serial Peripheral Interface (SPI) Flash.
The BIOS can be updated by following the instructions on page 59 in Chapter 3.
Serial ATA and IDE Auto Configuration
If you install a Serial ATA or IDE device (such as a hard drive) in your computer, the
auto-configuration utility in the BIOS automatically detects and configures the device
for your computer. You do not need to run the BIOS Setup program after installing a
Serial ATA or IDE device. You can override the auto-configuration options by
specifying manual configuration in the BIOS Setup program.
PCI and PCI Express*Auto Configuration
If you install a PCI/PCI Express add-in card in your computer, the PCI/PCI Express
auto-configuration utility in the BIOS automatically detects and configures the
resources (IRQs, DMA channels, and I/O space) for that add-in card. You do not need
to run the BIOS Setup program after you install a PCI/PCI Express add-in card.

Desktop Board Features
19
Security Passwords
The BIOS includes security features that restrict whether the BIOS Setup program can
be accessed and who can boot the computer. A supervisor password and a user
password can be set for the BIOS Setup and for booting the computer, with the
following restrictions:
•The supervisor password gives unrestricted access to view and change all Setup
options. If only the supervisor password is set, pressing <Enter> at the password
prompt of Setup gives the user restricted access to Setup.
•If both the supervisor and user passwords are set, you must enter either the
supervisor password or the user password to access Setup. Setup options are then
available for viewing and changing depending on whether the supervisor or user
password was entered.
•Setting a user password restricts who can boot the computer. The password
prompt is displayed before the computer is booted. If only the supervisor
password is set, the computer boots without asking for a password. If both
passwords are set, you can enter either password to boot the computer.
Related Links:
For instructions on resetting the password, see Clearing Passwords on page 52.
Hardware Management Features
The hardware management features of Desktop Board DP965LT enable the board to be
compatible with the Wired for Management (WfM) specification. The board has several
hardware management features including the following:
•Fan speed monitoring and control
•Thermal and voltage monitoring
•Chassis intrusion detection
Hardware Monitoring and Fan Speed Control
The features of the hardware monitoring and fan speed control include:
•Monitoring of power supply voltages to detect levels above and below acceptable
values
•Intel Quiet System Technology fan speed control, delivering acoustically-optimized
thermal management
NOTE
Memory must be installed in the Channel A, DIMM 0 socket to enable Intel®
Quiet System Technology.
•Fan speed controllers and sensors integrated into the ICH8
•Thermal sensors in the processor, MCH, and ICH8, plus an onboard remote sensor
•Thermally monitored closed-loop fan control, for all onboard fans, that can adjust
fan speed or switch the fans off as needed

Intel Desktop Board DP965LT Product Guide
20
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 26 on
page 50 for the location of the chassis intrusion header.
Power Management Features
Power management is implemented at several levels, including:
•Software support through the Advanced Configuration and Power Interface (ACPI)
•Hardware support:
⎯Power connectors
⎯Fan headers
⎯LAN wake capabilities
⎯Instantly Available PC technology (Suspend to RAM)
⎯+5 V standby power indicator LED
⎯Wake from USB
⎯Wake from PS/2 keyboard/mouse
⎯Power Management Event signal (PME#) wakeup support
⎯WAKE# signal wake-up support
ACPI
ACPI gives the operating system direct control over the power management and Plug
and Play functions of a computer. The use of ACPI with the desktop board requires an
operating system that provides full ACPI support.
Power Connectors
ATX12V-compliant power supplies can turn off the computer power through system
control. When an ACPI-enabled computer receives the correct command, the power
supply removes all non-standby voltages.
When resuming from an AC power failure, the computer returns to the power state it
was in before power was interrupted (either on or off). The computer’s response can
be set by using the Last Power State feature in the BIOS Setup program’s Boot menu.
The desktop board has two power connectors. See Figure 25 on page 49 for the
location of the power connectors.