Intel Desktop Board D845GLLY User manual

Product Supplement Document
for the
Intel®Desktop Board
D845GLLY
A companion document to the Technical Product
Specification for Intel®Desktop Boards
using the Intel®845GL Chipset
April 2002
Order Number: A86194-001
Intel®Desktop Boards using the Intel®845GL Chipset may contain design defects or errors known as errata that may cause the product to deviate from published specifications.
Current characterized errata are documented in the Specification Update for Intel Desktop Boards using the Intel 845GL Chipset.

Revision History
Revision Revision History Date
-001 First release of the Product Supplement Document for the Intel®Desktop
Board D845GLLY.
April 2002
This document applies to only the standard Intel Desktop Board D845GLLY with BIOS identifier
LY84510.86A.
Changes to this specification will be published in the Specification Update for Intel Desktop
Boards using the Intel®845GL Chipset before being incorporated into a revision of this document.
INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH INTEL®PRODUCTS. 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
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rights that relate to the presented subject matter. The furnishing of documents and other materials and information does
not provide any license, express or implied, by estoppel or otherwise, to any such patents, trademarks, copyrights, or other
intellectual property rights.
Intel products are not intended for use in medical, life saving, or life sustaining applications or for any other application in
which the failure of the Intel product could create a situation where personal injury or death may occur.
Intel may make changes to specifications, product descriptions, and plans at any time, without notice.
The Intel Desktop Board D845GLLY may contain design defects or errors known as errata that 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 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
P.O. Box 5937
Denver, CO 80217-9808
or call in North America 1-800-548-4725, Europe 44-0-1793-431-155, France 44-0-1793-421-777,
Germany 44-0-1793-421-333, other Countries 708-296-9333.
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 2002, Intel Corporation. All rights reserved.

iii
Preface
This Product Supplement Document specifies the major components, layout, connectors, and
environmental requirements for the Intel Desktop Board D845GLLY.
Intended Audience
The document is intended to provide detailed, technical information about the Intel Desktop Board
D845GLLY and its components to the vendors, system integrators, and other engineers and
technicians who need this level of information. It is specifically not intended for general
audiences.
What This Document Contains
As stated on the cover, this is a companion document to the Technical Product Specification for
Intel Desktop Boards using the Intel 845GL Chipset. The Technical Product Specification (order
number: A90788-001) is more general in nature, describing features common to multiple Desktop
Boards that use the Intel 845GL chipset. This document describes features specific (though not
necessarily exclusive) to the Intel Desktop Board D845GLLY.
Chapter Description
1 An overview of the features of the Intel Desktop Board D845GLLY.
2 A description of the features specific to this product. This chapter also includes
drawings of the Desktop Board showing the locations of connectors.
3 Describes the regulatory compliance information specific to the Intel Desktop Board
D845GLLY.
Typographical Conventions
This section contains information about the conventions used in this specification. Not all of these
symbols and abbreviations appear in all specifications of this type.
Notes, Cautions, and Warnings
✏ NOTE
Notes call attention to important information.

Product Supplement Document for the Intel Desktop Board D845GLLY
iv
@ INTEGRATOR’S NOTES
Integrator’s notes are used to call attention to information that may be useful to system
integrators.
CAUTION
Cautions are included to help you avoid damaging hardware or losing data.
WARNING
Warnings indicate conditions, which if not observed, can cause personal injury.
Other Common Notation
# Used after a signal name to identify an active-low signal (such as USBP0#).
(NxnX) When used in the description of a component, N indicates component type, xn are the relative
coordinates of its location on the Desktop Board, and X is the instance of the particular part at
that general location. For example, J5J1 is a connector, located at 5J. It is the first connector
in the 5J area.
GB Gigabyte (1,073,741,824 bytes)
GB/sec Gigabytes per second
KB Kilobyte (1024 bytes)
Kbit Kilobit (1024 bits)
kbits/sec 1000 bits per second
MB Megabyte (1,048,576 bytes)
MB/sec Megabytes per second
Mbit Megabit (1,048,576 bits)
Mbit/sec Megabits per second
xxh An address or data value ending with a lowercase h indicates a hexadecimal value.
x.x V Volts. Voltages are DC unless otherwise specified.
†This symbol is used to indicate third-party brands and names that are the property of their
respective owners.

v
Contents
1Overview
1.1 Feature Summary........................................................................................................ 7
1.2 Online Support ............................................................................................................ 8
1.3 Footnote Cross Reference........................................................................................... 9
1.4 Board Layout ..............................................................................................................10
2Product-Specific Features
2.1 Processor Support......................................................................................................11
2.2 Connectors .................................................................................................................12
2.2.1 Back Panel Connectors................................................................................13
2.2.2 Internal I/O Connectors ................................................................................14
2.2.3 External I/O Connectors ...............................................................................19
2.3 Jumper Block..............................................................................................................23
2.4 I/O Shield....................................................................................................................24
2.5 Mechanical Considerations.........................................................................................25
2.6 Electrical Considerations ............................................................................................26
2.6.1 Power Consumption.....................................................................................26
2.6.2 Add-in Board Considerations........................................................................26
2.6.3 Standby Current Requirements ....................................................................27
2.6.4 Fan Connector Current Capability ................................................................28
2.6.5 Power Supply Considerations ......................................................................28
2.6.6 Standby Power Indicator LED ......................................................................29
2.7 Reliability ....................................................................................................................30
2.8 Thermal Considerations..............................................................................................30
3Regulatory Compliance Information
3.1 Regulatory Compliance ..............................................................................................33
3.1.1 Safety Regulations .......................................................................................33
3.1.2 EMC Regulations .........................................................................................33
3.1.3 Product Certification Markings (Board Level) ...............................................34
Figures
1. Desktop Board D845GLLY Components ....................................................................10
2. Back Panel Connectors ..............................................................................................13
3. Audio, Power, and Hardware Control Connectors ......................................................15
4. Add-in Board and Peripheral Interface Connectors.....................................................18
5. External I/O Connectors .............................................................................................19
6. Location of the Jumper Block .....................................................................................23
7. I/O Shield Dimensions ................................................................................................24
8. Desktop Board Dimensions ........................................................................................25
9. Location of the Standby Power Indicator LED ............................................................29
10. Localized High Temperature Zones............................................................................31

Product Supplement Document for the Intel Desktop Board D845GLLY
vi
Tables
1. Feature Summary........................................................................................................ 7
2. Cross Reference of Footnotes from the Technical Product Specification..................... 9
3. Supported Processors ................................................................................................11
4. Auxiliary Line In Connector.........................................................................................16
5. ATAPI CD-ROM Connector ........................................................................................16
6. ATX12V Power Connector..........................................................................................16
7. Rear Chassis Fan Connector .....................................................................................16
8. Processor Fan Connector...........................................................................................16
9. Main Power Connector ...............................................................................................17
10. Front Chassis Fan Connector.....................................................................................17
11. Chassis Intrusion Connector.......................................................................................17
12. Serial Port B Connector..............................................................................................19
13. Front Panel USB Connector .......................................................................................20
14. Front Panel Connector ...............................................................................................20
15. States for a One-Color Power LED.............................................................................21
16. States for a Two-Color Power LED.............................................................................21
17. Auxiliary Front Panel Power/Sleep/Message-Waiting LED Connector ........................22
18. BIOS Setup Configuration Jumper Settings................................................................23
19. Power Usage..............................................................................................................26
20. Standby Current Requirements ..................................................................................27
21. Fan Connector Current Capability ..............................................................................28
22. Thermal Considerations for Components ...................................................................31
23. Safety Regulations .....................................................................................................33
24. EMC Regulations........................................................................................................33

7
1 Overview
1.1 Feature Summary
Table 1 summarizes the major features of the Intel®Desktop Board D845GLLY.
Table 1. Feature Summary
Form Factor microATX (9.20 inches by 8.20 inches)
Processor Support for an Intel®Pentium®4 processor or an Intel®Celeron®processor in a
µPGA478 socket with a 400 MHz system bus
Memory • Two 168-pin Single Data Rate (SDR) SDRAM Dual Inline Memory Module
(DIMM) sockets
• Support for 3.3 V (only) 168-pin 133 MHz Single Data Rate (SDR) SDRAM
DIMMs with gold-plated contacts
• Support for up to 2 GB system memory
NOTE: Desktop Boards using the Intel®845GL Chipset Desktop Board have
been designed to support DIMMs based on 512 Mbit technology for a
maximum onboard capacity of up to 2 GB, but this technology has not
been validated. Please refer to the following Intel web site for the latest
list of tested memory:
http://developer.intel.com/design/motherbd/ly/ly_mem.htm
Chipset Intel®845GL Chipset, consisting of:
• Intel®82845GL Graphics and Memory Controller Hub (GMCH)
• Intel®82801DB I/O Controller Hub (ICH4)
• 4 Mbit Firmware Hub (FWH)
Audio Audio subsystem for AC ‘97 processing using the SigmaTel STAC9750/66 codec
Video Intel®Extreme Graphics controller
I/O Control LPC Bus I/O controller (SMSC LPC47M102)
Peripheral
Interfaces
• Up to four USB ports
• Two serial ports
• One parallel port
• Two IDE interfaces with UDMA 33, ATA-66/100 support
• One diskette drive interface
• PS/2†keyboard and mouse ports
• Three fan connectors
Expansion
Capabilities
Four PCI bus add-in card connectors (SMBus routed to PCI bus connector 2)
continued

Product Supplement Document for the Intel Desktop Board D845GLLY
8
Table 1. Feature Summary (continued)
Hardware
Management
Subsystem
• Two fan sense inputs used to monitor fan activity
• Chassis intrusion detection
BIOS • Intel/AMI BIOS (resident in the 4 Mbit FWH)
• 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
• Suspend to RAM support
• Wake on PCI, RS-232, front panel, PS/2 devices, and USB ports
LAN Intel®82562ET 10/100 Mbit/sec Platform LAN Connect (PLC) device
1.2 Online Support
To find information about…Visit this World Wide Web site:
The Intel Desktop Board D845GLLY
under “Product Info”or “Customer
Support”
http://www.intel.com/design/motherbd
http://support.intel.com/support/motherboards/desktop
Available configurations for the Intel
Desktop Board D845GLLY
http://developer.intel.com/design/motherbd/ly/ly_available.htm

Overview
9
1.3 Footnote Cross Reference
This document is a companion document to the Technical Product Specification for Intel
Desktop Boards using the Intel 845GL Chipset. The Technical Product Specification (order
number: A90788-001) contains footnotes that refer you to this document for information specific
to this Desktop Board. Table 2 lists all of the footnotes in the Technical Product Specification that
refer to this document.
Table 2. Cross Reference of Footnotes from the Technical Product Specification
Footnote
Number Footnote Text Cross Reference
1 Memory support (DDR SDRAM or SDR
SDRAM) is product-dependent.
The Desktop Board D845GLLY supports SDR
SDRAM.
4 Some Desktop Boards may use a different BIOS
core.
The D845GLLY Desktop Board uses an
Intel/AMI BIOS core.
5 Memory support (DDR SDRAM or SDR
SDRAM) is product-dependent.
The Desktop Board D845GLLY supports SDR
SDRAM.
6 Memory support (DDR SDRAM or SDR
SDRAM) is product-dependent.
The Desktop Board D845GLLY supports SDR
SDRAM.
7 Processor support is product-dependent. Supported processors are listed in Section 2.1
on page 11.
8 Memory support (DDR SDRAM or SDR
SDRAM) is product-dependent.
The Desktop Board D845GLLY supports SDR
SDRAM.
9 The location of the serial port B connector is
product dependent.
Figure 5 on page 19 shows the location of the
serial port B connector. Table 12 on page 19
lists the signal names of the connector.
11 The front panel audio connector is not present
on all boards that contain the audio subsystem.
The front panel audio connector is not present
on this Desktop Board.
13 Standby current requirements are product
dependent.
Power usage and standby current requirements
are described in Section 2.6.3 on page 27.
14 Standby current requirements are product
dependent.
Power usage and standby current requirements
are described in Section 2.6.3 on page 27.
15 The location of the standby power indicator LED
is product dependent.
Figure 9 on page 29 shows the location of the
standby power indicator LED.
16 Some Desktop Boards may use a different BIOS
core.
The Desktop Board D845GLLY uses an
Intel/AMI BIOS core.

Product Supplement Document for the Intel Desktop Board D845GLLY
10
1.4 Board Layout
Figure 1 shows the location of the major components on the Desktop Board D845GLLY.
OM13642
D
AB C
F
H
J
I
G
E
TLNMPQRSOU
W
X
Y
Z
VK
A Audio codec N Diskette drive connector
B Auxiliary line-in connector O IDE connectors
C ATAPI CD-ROM connector P Speaker
D Back panel connectors Q Battery
E +12V power connector (ATX12V) R Auxiliary front panel power LED connector
F Rear chassis fan connector S Front chassis fan connector
G Intel 82845GL Graphics and Memory Controller
Hub (GMCH)
T Chassis intrusion connector
H µPGA478 processor socket U BIOS Setup configuration jumper block
I Processor fan connector V 4 Mbit Firmware Hub (FWH)
J DIMM sockets W Front panel connector
K Serial port B connector X Front panel USB connector
L I/O Controller Y Intel 82801DB I/O Controller Hub (ICH4)
M Power connector Z PCI bus add-in card connectors
Figure 1. Desktop Board D845GLLY Components

11
2 Product-Specific Features
2.1 Processor Support
CAUTION
Use only the processors listed below. Use of unsupported processors can damage the Desktop
Board, the processor, and the power supply. See the Specification Update for Intel Desktop
Boards using the Intel 845GL Chipset for the most up-to-date list of supported processors for these
boards.
The Desktop Boards provide a µPGA478 processor socket. Table 3 lists the supported processors.
All supported onboard memory can be cached. See the processor’s data sheet for cachability
limits.
Table 3. Supported Processors
Type Designation System Bus L2 Cache Size
Celeron processor 1.7, 1.8, and 1.9 GHz 400 MHz 128 KB
Pentium 4 processor 1.4, 1.5, 1.6, 1.7, 1.8,
1.9, and 2.0 GHz
400 MHz 256 KB
Pentium 4 processor 1.6A, 1.8A, 2.0A, 2.2,
and 2.4 GHz
400 MHz 512 KB
@ INTEGRATOR’S NOTES
• Use only ATX12V- or SFX12V-compliant power supplies with this Desktop Board.
ATX12V and SFX12V power supplies have an additional power lead that provides
required supplemental power for the processor. Always connect the 20-pin and 4-pin
leads of ATX12V and SFX12V power supplies to the corresponding connectors on the
Desktop Board, otherwise the Desktop Board will not boot.
• Do not use a standard ATX power supply. The Desktop Board will not boot with a
standard ATX power supply.

Product Supplement Document for the Intel Desktop Board D845GLLY
12
2.2 Connectors
CAUTION
Only the back panel USB, front panel USB, VGA, and PS/2 connectors have overcurrent
protection. The Desktop Boards’internal connectors are not overcurrent protected and should
connect only to devices inside the computer’s chassis, such as fans and internal peripherals. Do
not use these connectors to power devices external to the computer’s chassis. A fault in the load
presented by the external devices could cause damage to the computer, the interconnecting cable,
and the external devices themselves.
This section describes the Desktop Board’s connectors. The connectors can be divided into the
following groups:
• Back panel I/O connectors (see page 13)
 PS/2 keyboard and mouse
 USB
 Parallel port
 Serial port
 VGA
 LAN (optional)
 Audio (line out, line in, and mic in)
• Internal I/O connectors (see page 14)
 Audio (auxiliary line input and ATAPI CD-ROM)
 Fans
 Power
 Add-in boards (PCI)
 IDE
 Diskette drive
 Chassis intrusion
• External I/O connectors (see page 19)
 Front panel USB
 Front panel (power/sleep/message-waiting LED, power switch, hard drive activity LED,
reset switch, and auxiliary front panel power LED)
 Auxiliary front panel power/sleep/message-waiting LED
@ INTEGRATOR’S NOTE
When installing the Desktop Board in a microATX chassis, make sure that peripheral devices are
installed at least 1.5 inches above the main power connector, the diskette drive connector, the IDE
connector, and the DIMM sockets.

Product-Specific Features
13
2.2.1 Back Panel Connectors
Figure 2 shows the location of the back panel connectors. The back panel connectors are
color-coded in compliance with PC 99 recommendations. The figure legend below lists the
colors used.
OM13643
B
A
H IE
D
KJC
G
F
Item Description Color
A PS/2 mouse port Green
B PS/2 keyboard port Purple
C Serial port A Teal
D Parallel port Burgundy
E VGA Dark blue
F USB port Black
G LAN (optional) Black
H USB port Black
I Mic in Pink
J Audio line out Lime green
K Audio line in Light blue
Figure 2. Back Panel Connectors
@ INTEGRATOR’S NOTE
The back panel audio line out connector is designed to power headphones or amplified speakers
only. Poor audio quality occurs if passive (non-amplified) speakers are connected to this output.

Product Supplement Document for the Intel Desktop Board D845GLLY
14
2.2.2 Internal I/O Connectors
The internal I/O connectors are divided into the following functional groups:
• Audio, power, and hardware control (see page 15)
 Auxiliary line in
 ATAPI CD-ROM
 Fans
 ATX12V power
 Main power
• Add-in boards and peripheral interfaces (see page 18)
 PCI bus
 IDE
 Diskette drive
2.2.2.1 Expansion Slots
The Desktop Board has four PCI rev 2.2 compliant local bus slots. The SMBus is routed to PCI
bus connector 2.
@ INTEGRATOR’S NOTE
This document references back-panel slot numbering with respect to processor location on the
Desktop Board. PCI slots are identified as PCI slot #x, starting with the slot closest to the
processor. The ATX/microATX specifications identify expansion slot locations with respect to the
far edge of a full-sized ATX chassis. The ATX specification and the Desktop Board’s silkscreen
are opposite and could cause confusion. The ATX numbering convention is made without respect
to slot type, but refers to an actual slot location on a chassis. Figure 4 on page 18 illustrates the
Desktop Board’s PCI slot numbering.

Product-Specific Features
15
2.2.2.2 Audio, Power, and Hardware Control Connectors
Figure 3 shows the location of the audio, power, and hardware control connectors.
OM13644
4
1
4
1
1
13
4
21
3
1
3
10
20 11
1
H G
E
D
F
ABC
1
3
Item Description For more information see:
A Auxiliary line in, ATAPI style (white) Table 4
B ATAPI CD-ROM (black) Table 5
C +12 V power connector (ATX12V) Table 6
D Rear chassis fan Table 7
E Processor fan Table 8
F Main power Table 9
G Front chassis fan Table 10
H Chassis intrusion Table 11
Figure 3. Audio, Power, and Hardware Control Connectors

Product Supplement Document for the Intel Desktop Board D845GLLY
16
Table 4. Auxiliary Line In Connector
Pin Signal Name
1 Left auxiliary line in
2 Ground
3 Ground
4 Right auxiliary line in
Table 5. ATAPI CD-ROM Connector
Pin Signal Name
1 Left audio input from CD-ROM
2 CD audio differential ground
3 CD audio differential ground
4 Right audio input from CD-ROM
@ INTEGRATOR’S NOTES
• Use only ATX12V- or SFX12V-compliant power supplies with the Desktop Board
D845GLLY. ATX12V and SFX12V power supplies have an additional power lead that
provides required supplemental power for the processor. Always connect the 20-pin and
4-pin leads of ATX12V and SFX12V power supplies to the corresponding connectors on
the Desktop Board, otherwise the Desktop Board will not boot.
• Do not use a standard ATX power supply. The Desktop Board will not boot with a
standard ATX power supply.
Table 6. ATX12V Power Connector
Pin Signal Name Pin Signal Name
1 Ground 2 Ground
3 +12 V 4 +12 V
Table 7. Rear Chassis Fan Connector
Pin Signal Name
1 Ground
2 +12 V
3 REAR_TACH_OUT
Table 8. Processor Fan Connector
Pin Signal Name
1 Ground
2 +12 V
3 CPU_FAN_TACH

Product-Specific Features
17
Table 9. Main Power Connector
Pin Signal Name Pin Signal Name
1 +3.3 V 11 +3.3 V
2 +3.3 V 12 -12 V
3 Ground 13 Ground
4 +5 V 14 PS-ON# (power supply remote on/off)
5 Ground 15 Ground
6 +5 V 16 Ground
7 Ground 17 Ground
8 PWRGD (Power Good) 18 No connect
9 +5 V (Standby) 19 +5 V
10 +12 V 20 +5 V
Table 10. Front Chassis Fan Connector
Pin Signal Name
1 Ground
2 +12 V
3 No connect
Table 11. Chassis Intrusion Connector
Pin Signal Name
1 Intruder
2 Ground

Product Supplement Document for the Intel Desktop Board D845GLLY
18
2.2.2.3 Add-in Board and Peripheral Interface Connectors
Figure 4 shows the location of the add-in board connector and peripheral connectors for the
Desktop Board D845GLLY. Note the following considerations for the PCI bus connectors:
• All of the PCI bus connectors are bus master capable.
• SMBus signals are routed to PCI bus connector 2, enabling PCI bus add-in boards with SMBus
support to access sensor data on the Desktop Board. The SMBus signals are as follows:
 The SMBus clock line is connected to pin A40.
 The SMBus data line is connected to pin A41.
OM13645
A
2
40
39
40
39
1
1
GE
F
2
33
34
1
2
B C D
Item Description
A PCI bus connector 4
B PCI bus connector 3
C PCI bus connector 2
D PCI bus connector 1
E Diskette drive
F Primary IDE
G Secondary IDE
Figure 4. Add-in Board and Peripheral Interface Connectors
@ INTEGRATOR’S NOTE
Not all PCI video cards can be used in PCI bus connectors 1 and 2 (the PCI bus connectors closest
to the processor). To avoid clearance problems, install PCI video cards in PCI bus connector 3.

Product-Specific Features
19
2.2.3 External I/O Connectors
Figure 5 shows the locations of the external I/O connectors.
B
OM13646
710
2
1
9
8
2
1
13
C
D
91
82
A
Item Description For more information see:
A Serial port B Table 12
B Auxiliary front panel power/sleep/message-waiting LED Table 17
C Front panel Table 14
D Front panel USB Table 13
Figure 5. External I/O Connectors
Table 12. Serial Port B Connector
Pin Signal Name Pin Signal Name
1 DCD 2 RXD
3 TXD 4 DTR
5 Ground 6 DSR
7 RTS 8 CTS
9 RI 10 Not connected

Product Supplement Document for the Intel Desktop Board D845GLLY
20
Table 13. Front Panel USB Connector
Pin Signal Name Pin Signal Name
1 USB_FNT_PWR 2 USB_FNT_PWR
3 USB_FNTA# 4 USB_FNTB#
5 USB_FNTA 6 USB_FNTB
7 Ground 8 Ground
9 Not connected 10 Not connected
@ INTEGRATOR’S NOTE
Use only a front panel USB connector that conforms to the USB 2.0 specification for high-speed
USB devices.
2.2.3.1 Front Panel Connector
This section describes the functions of the front panel connector. Table 14 lists the signal names
of the front panel connector.
Table 14. Front Panel Connector
Pin Signal In/Out Description Pin Signal In/Out Description
Hard Drive Activity LED Power LED
1 HD_PWR Out Hard disk LED pull-up
(330 Ω) to +5 V
2 HDR_BLNK_
GRN
Out Front panel green
LED
3 HAD# Out Hard disk active LED 4 HDR_BLNK_
YEL
Out Front panel yellow
LED
Reset Switch On/Off Switch
5 Ground Ground 6 SWITCH_ON
#
In Power switch
7 FP_RESET# In Reset switch 8 Ground Ground
9 +5 V Out Power 10 N/C Not connected
OM14561
8
6
4
2
9
7
5
3
1
Hard Drive
Activity LED
Reset
Switch
+5 V DC N/C
Power
Switch
Power
LED