Global American Inc. LGA 775 Socket User manual

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2807940 User’s Manual
Micro ATX Motherboard with LGA 775 Socket
Version 1.
0

2807940 uATX Motherboard
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Copyrights
This document is copyrighted and all rights are reserved. It does not allow any non
authorization in copied, photocopied, translated or reproduced to any electronic
or machine readable form in whole or in part without prior written consent from
the manufacturer.
In general, the manufacturer will not be liable for any direct, indirect, special,
incidental or consequential damages arising from the use of inability to use the
product or documentation, even if advised of the possibility of such damages.
The manufacturer keeps the rights in the subject to change the contents of this
document without prior notices in order to improve the function design, performance,
quality and reliability. The author assumes no responsibility for any errors or omissions,
which may appear in this document, nor does it make a commitment to update the
information contained herein.
Trademarks
Intel is a registered trademark of Intel Corporation.
Award is a registered trademark of Award Software, Inc.
All other trademarks, products and or product's name mentioned herein are
mentioned for identification purposes only, and may be trademarks and/or
registered trademarks of their respective companies or owners.

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Manual Conventions
WARNING!
Warnings appear where overlooked details may cause damage to the equipment or result
in personal injury. Warnings should be taken seriously. Warnings are easy to recognize.
The word “warning” is written as “WARNING,” both capitalized and bold and is followed by
text. The text is the warning message. A warning message is shown below:
WARNING:
This is an example of a warning message. Failure to adhere to warning
messages may result in permanent damage to the 2807940 or
personal injury to the user. Please take warning messages seriously.
CAUTION!
Cautionary messages should also be heeded to help reduce the chance of losing data or
damaging the 2807940. Cautions are easy to recognize. The word “caution” is written as
“CAUTION,” both capitalized and bold and is followed. The italicized text is the cautionary
message. A caution message is shown below:

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CAUTION:
This is an example of a caution message. Failure to adhere to cautions
messages may result in permanent damage to the 2807940. Please
take caution messages seriously.
NOTE:
These messages inform the reader of essential but non-critical information. These
messages should be read carefully as any directions or instructions contained therein can
help avoid making mistakes. Notes are easy to recognize. The word “note” is written as
“NOTE,” both capitalized and bold and is followed by text. The text is the cautionary
message. A note message is shown below:
NOTE:
This is an example of a note message. Notes should always be read.
Notes contain critical information about the 2807940. Please take note
messages seriously.

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Packing List
NOTE:
If any of the components listed in the checklist below are missing,
please do not proceed with the installation. Please contact the Global American,
Inc. at [phone] or link to Technical Support.
The items listed below should all be included in the 2807940 package.
1 x 2807940 single board computer
3 x SATA power cables
6 x SATA cables
1 x Dual RS-232 cable
1 x USB cable
1 x Mini jumper pack
1 x Utility CD
1 x IO shielding
1 x QIG (quick installation guide)
Images of the above items are shown in Chapter 3.

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Table of Contents
1INTRODUCTION..................................................................................................... 1
1.1 OVERVIEW.................................................................................................................. 2
1.1.1 2807940 Features .............................................................................................. 3
1.2 2807940 OVERVIEW................................................................................................... 3
1.2.1 2807940 Overview Photo................................................................................... 3
1.2.2 2807940 Peripheral Connectors and Jumpers.................................................. 4
1.2.3 Technical Specifications..................................................................................... 6
2DETAILED SPECIFICATIONS ............................................................................. 8
2.1 DIMENSIONS............................................................................................................... 9
2.1.1 Board Dimensions.............................................................................................. 9
2.1.2 External Interface Panel Dimensions.............................................................. 10
2.2 DATA FLOW...............................................................................................................11
2.3 COMPATIBLE PROCESSORS ....................................................................................... 12
2.3.1 Supported Processors Overview...................................................................... 12
2.3.2 Supported Intel® Core™2 Quad (Yorkfield) Processors ................................ 12
2.3.3 Supported Intel® Core™2 Duo (Wolfdale) Processors................................... 13
2.3.4 Supported Intel® Core™2 Duo (Conroe) Processors..................................... 13
2.3.5 Supported Intel® Celeron® (Conroe) Processors........................................... 14
2.4 INTEL®Q35 NORTHBRIDGE CHIPSET....................................................................... 14
2.4.1 Intel® Q35 Northbridge Chipset ..................................................................... 14
2.4.2 Intel® Q35 Front Side Bus (FSB) Support...................................................... 14
2.4.3 Intel® Q35 Memory Controller....................................................................... 15
2.4.4 Intel® Q35 PCIe x16 Interface........................................................................ 16
2.4.5 Intel® Q35 Graphics and Display Features.................................................... 17
2.4.6 Intel® Q35 Analog Display Capability ........................................................... 17
2.4.7 Intel® Q35 Direct Media Interface (DMI) ...................................................... 18
2.5 INTEL®ICH9DO SOUTHBRIDGE CHIPSET ................................................................ 19
2.5.1 Intel®ICH9DO Overview................................................................................ 19
2.5.2 Intel®ICH9DO Features ................................................................................. 19
2.5.3 Intel® ICH9DO High Definition Audio Implementation................................. 20

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2.5.4 Intel®ICH9DO Ethernet Controller................................................................ 20
2.5.4.1 Intel® 82566DM Gigabit LAN Connect Device...................................... 21
2.5.5 Intel®ICH9DO Low Pin Count (LPC) Interface............................................. 22
2.5.6 Intel®ICH9DO PCI Interface.......................................................................... 23
2.5.7 Intel®ICH9DO PCIe x4 Bus............................................................................ 23
2.5.8 Intel®ICH9DO Real Time Clock..................................................................... 23
2.5.9 Intel®ICH9DO SATA Controller..................................................................... 24
2.5.10 Intel®ICH9DO Serial Peripheral Interface (SPI) BIOS............................... 25
2.5.11 Intel®ICH9DO USB Controller..................................................................... 25
2.5.11.1 Intel®ICH9DO USB Controller Overview............................................. 25
2.5.11.2 2807940 USB Implementation................................................................ 26
2.6 2807940 PCIE BUS COMPONENTS ........................................................................... 26
2.6.1 PCIe Bus Overview.......................................................................................... 26
2.6.2 PCIe x16 Slot ................................................................................................... 27
2.6.3 PCIe x4 Slot ..................................................................................................... 27
2.6.4 Intel® 82573L PCIe GbE Controller............................................................... 28
2.7 PCI BUS COMPONENTS ............................................................................................ 29
2.7.1 PCI Bus Overview............................................................................................ 29
2.7.2 PCI Slots .......................................................................................................... 29
2.8 LPC BUS COMPONENTS ........................................................................................... 30
2.8.1 LPC Bus Overview........................................................................................... 30
2.8.2 TPM Module .................................................................................................... 30
2.8.3 Super I/O chipset.............................................................................................. 31
2.8.3.1 Super I/O LPC Interface ........................................................................... 33
2.8.3.2 Super I/O 16C550 UARTs ........................................................................ 33
2.8.3.3 Super I/O Enhanced Hardware Monitor................................................... 33
2.8.3.4 Super I/O Floppy Disk Drive (FDD) Controller....................................... 33
2.8.3.5 Super I/O Fan Speed Controller................................................................ 34
2.8.3.6 Super I/O Keyboard/Mouse Controller..................................................... 34
2.8.3.7 Super I/O GPIO Ports ............................................................................... 34
2.8.3.8 Super I/O Infrared..................................................................................... 34
2.8.3.9 Super I/O Parallel Port.............................................................................. 34
2.8.3.10 Super I/O Watchdog Timer ..................................................................... 35
2.8.4 Fintek F81216DG LPC Serial Port Chipset.................................................... 35
2.9 ETHERNET LAN CONTROLLERS............................................................................... 35

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2.10 ENVIRONMENTAL AND POWER SPECIFICATIONS ..................................................... 37
2.10.1 System Monitoring......................................................................................... 37
2.10.2 Operating Temperature and Temperature Control......................................... 37
2.10.3 Power Consumption....................................................................................... 38
3UNPACKING.......................................................................................................... 39
3.1ANTI-STATIC PRECAUTIONS...................................................................................... 40
3.2 UNPACKING.............................................................................................................. 40
3.2.1 Unpacking Precautions.................................................................................... 40
3.3 UNPACKING CHECKLIST........................................................................................... 41
3.3.1 Package Contents............................................................................................. 41
3.4 OPTIONAL ITEMS...................................................................................................... 42
4CONNECTOR PINOUTS...................................................................................... 43
4.1 PERIPHERAL INTERFACE CONNECTORS..................................................................... 44
4.1.1 2807940 Layout ............................................................................................... 44
4.1.2 Peripheral Interface Connectors ..................................................................... 45
4.1.3 External Interface Panel Connectors............................................................... 46
4.2 INTERNAL PERIPHERAL CONNECTORS...................................................................... 47
4.2.1 ATX Power Connector ..................................................................................... 47
4.2.2 Audio CD In Connector................................................................................... 49
4.2.3 CPU Power Connector.................................................................................... 50
4.2.4 Digital Input/Output (DIO) Connector............................................................ 50
4.2.5 Fan Connector, CPU (12V, 4-pin).................................................................... 52
4.2.6 Fan Connector, System (+12V, 3-pin).............................................................. 53
4.2.7 Floppy Disk Connector (34-pin)...................................................................... 54
4.2.8 Front Audio Connector.................................................................................... 55
4.2.9 Front Panel Connector .................................................................................... 56
4.2.10 Infrared Interface Connector......................................................................... 57
4.2.11 PCIe Power Connector .................................................................................. 58
4.2.12 SATA Drive Connectors ................................................................................. 59
4.2.13 Serial Port Connector (COM2, COM 3 and COM4)..................................... 61
4.2.14 SPDIF Connector........................................................................................... 62
4.2.15 Trusted Platform Module (TPM) Connector.................................................. 63
4.2.16 USB Connectors (Internal)............................................................................ 64

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4.3 EXTERNAL PERIPHERAL INTERFACE CONNECTOR PANEL ......................................... 65
4.3.1 Audio Connectors............................................................................................. 65
4.3.2 Keyboard/Mouse Connector............................................................................ 66
4.3.3 LAN and Dual USB Combo Connectors.......................................................... 67
4.3.4 Parallel Port, Serial Port and VGA Combo Connector................................... 69
5INSTALLATION .................................................................................................... 72
5.1ANTI-STATIC PRECAUTIONS...................................................................................... 73
5.2 INSTALLATION CONSIDERATIONS.............................................................................. 74
5.2.1 Installation Notices.......................................................................................... 74
5.2.2 Installation Checklist....................................................................................... 75
5.3 UNPACKING.............................................................................................................. 76
5.3.1 Unpacking Precautions.................................................................................... 76
5.4 CPU, CPU COOLING KIT AND DIMM INSTALLATION .............................................. 76
5.4.1 Socket LGA775 CPU Installation.................................................................... 77
5.4.2 Socket LGA775 2107695 Cooling Kit Installation .......................................... 80
5.4.3 DIMM Installation........................................................................................... 82
5.4.3.1 DIMM Purchasing Guidelines.................................................................. 83
5.4.3.2 DIMM Installation Order.......................................................................... 83
5.4.3.3 DIMM Installation Guidelines.................................................................. 84
5.5 JUMPER SETTINGS .................................................................................................... 85
5.5.1 Clear CMOS Jumper........................................................................................ 86
5.5.2 COM Port Pin 9 Setting Jumpers .................................................................... 87
5.5.3 COM Port Pin 9 Voltage Setting Jumpers ....................................................... 89
5.6 CHASSIS INSTALLATION............................................................................................ 90
5.6.1 Airflow.............................................................................................................. 90
5.6.2 Motherboard Installation................................................................................. 91
5.7 INTERNAL PERIPHERAL DEVICE CONNECTIONS........................................................ 91
5.7.1 Peripheral Device Cables................................................................................ 91
5.7.2 Dual RS-232 Cable Connection....................................................................... 91
5.7.3 SATA Drive Connection ................................................................................... 92
5.7.4 USB Cable (Dual Port).................................................................................... 94
5.7.5 PCIe x16 Expansion Card Installation............................................................ 95
5.8 EXTERNAL PERIPHERAL INTERFACE CONNECTION ................................................... 96
5.8.1 Audio Connection............................................................................................. 96

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5.8.2 LAN Connection (Single Connector)............................................................... 97
5.8.3 Parallel Device Connection............................................................................. 98
5.8.4 PS/2 Keyboard and Mouse Connection........................................................... 99
5.8.5 Serial Device Connection .............................................................................. 100
5.8.6 USB Device Connection................................................................................. 101
5.8.7 VGA Monitor Connection .............................................................................. 102
6INTEL®AMT CONFIGURATION..................................................................... 104
6.1 INTEL®AMTSETUP PROCEDURE ........................................................................... 105
6.2 INTEL®MANAGEMENT ENGINE BIOS EXTENSION................................................. 106
6.3 USING THE INTEL®AMT WEB INTERFACE ..............................................................111
ATERMINOLOGY..................................................................................................114
BDIO INTERFACE...................................................................................................119
B.1 DIO INTERFACE INTRODUCTION .......................................................................... 120
B.2 DIO CONNECTOR PINOUTS.................................................................................... 120
B.3ASSEMBLY LANGUAGE SAMPLES........................................................................... 121
B.3.1 Enable the DIO Input Function..................................................................... 121
B.3.2 Enable the DIO Output Function.................................................................. 121
CWATCHDOG TIMER............................................................................................ 122
DADDRESS MAPPING......................................................................................... 125
D.1ADDRESS MAP ..................................................................................................... 126
D.2 1ST MB MEMORYADDRESS MAP........................................................................ 126
D.3 IRQ MAPPING TABLE........................................................................................... 127
D.4 DMACHANNEL ASSIGNMENTS............................................................................ 127
ECOMPATIBILITY................................................................................................ 128
E.1 COMPATIBLE OPERATING SYSTEMS........................................................................ 129
E.2 COMPATIBLE PROCESSORS ..................................................................................... 129
E.3 COMPATIBLE MEMORY MODULES.......................................................................... 129
FINTEL®MATRIX STORAGE MANAGER...................................................... 131
F.1 INTRODUCTION....................................................................................................... 132
F.1.1 Precautions .................................................................................................... 132
F.2 FEATURES AND BENEFITS ....................................................................................... 133

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F.3 ACCESSING THE INTEL®MATRIX STORAGE MANAGER........................................... 133
F.4 RAID CONFIGURATION.......................................................................................... 134
F.4.1 Creating a RAID Volume................................................................................ 134
F.4.2 Deleting a RAID Volume................................................................................ 139
F.4.3 Resetting a Disk to Non-RAID ....................................................................... 141
F.4.4 Exiting the Matrix Storage Manager ............................................................. 143
GHAZARDOUS MATERIALS DISCLOSURE................................................... 145
G.1 HAZARDOUS MATERIAL DISCLOSURE TABLE FOR IPB PRODUCTS CERTIFIED AS
ROHS COMPLIANT UNDER 2002/95/EC WITHOUT MERCURY..................................... 146
HINDEX .................................................................................................................... 148

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List of Figures
Figure 1-1: 2807940 uATX Motherboard......................................................................................2
Figure 1-2: 2807940 Overview [Front View]................................................................................4
Figure 2-1: 2807940 Dimensions (mm)........................................................................................9
Figure 2-2: External Interface Panel Dimensions (mm)...........................................................10
Figure 2-3: Data Flow Block Diagram........................................................................................11
Figure 2-4: Front Side Bus (FSB)...............................................................................................15
Figure 2-5: DDR2 DIMM Sockets................................................................................................15
Figure 2-6: VGA Connector ........................................................................................................18
Figure 2-7: DMI Chip-to-Chip Connection.................................................................................18
Figure 2-8: Audio Connectors....................................................................................................20
Figure 2-9: Intel® 82566DM Gigabit LAN Connect Device ......................................................22
Figure 2-10: SATA Drive Connectors ........................................................................................25
Figure 2-11: Onboard USB Implementation..............................................................................26
Figure 2-12: PCIe x16 Slot ..........................................................................................................27
Figure 2-13: PCIe x4 Slot ............................................................................................................28
Figure 2-14: Intel® 82573L PCIe GbE Controller......................................................................28
Figure 2-15: PCI Slots .................................................................................................................30
Figure 2-16: TPM Connector.......................................................................................................31
Figure 2-17: ITE IT8712F Super I/O............................................................................................32
Figure 2-18: LAN Connections...................................................................................................36
Figure 4-1: Connector and Jumper Locations..........................................................................44
Figure 4-2: ATX Power Connector Pinout Locations...............................................................48
Figure 4-3: Audio CD In Connector Pinouts (4-pin).................................................................49
Figure 4-4: CPU Power Connector Location.............................................................................50
Figure 4-5: DIO Connector Location..........................................................................................51
Figure 4-6: +12V Fan Connector Location................................................................................52
Figure 4-7: +12V Fan Connector Location................................................................................53

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Figure 4-8: 34-pin FDD Connector Location.............................................................................54
Figure 4-9: Front Audio Connector Location (10-pin) .............................................................55
Figure 4-10: Front Panel Connector Pinout Locations (14-pin)..............................................57
Figure 4-11: Infrared Connector Location.................................................................................58
Figure 4-12: PCIe Power Connector Location..........................................................................59
Figure 4-13: SATA Drive Connector Locations........................................................................60
Figure 4-14: Serial Connector Location....................................................................................61
Figure 4-15: SPDIF Connector Location ...................................................................................62
Figure 4-16: TPM Connector Location ......................................................................................63
Figure 4-17: USB Connector Locations ....................................................................................64
Figure 4-18: 2807940 External Peripheral Interface Connector..............................................65
Figure 4-19: Audio Connector....................................................................................................66
Figure 4-20: PS/2 Pinouts...........................................................................................................66
Figure 4-21: RJ-45 Ethernet Connector.....................................................................................68
Figure 4-22 Parallel Port Connector Pinout Locations............................................................69
Figure 4-23: COM1 Pinout Locations ........................................................................................70
Figure 4-24: VGA Connector ......................................................................................................71
Figure 5-1: Intel® LGA775 Socket..............................................................................................77
Figure 5-2: Remove the CPU Socket Protective Shield...........................................................78
Figure 5-3: Open the CPU Socket Load Plate...........................................................................79
Figure 5-4: Insert the Socket LGA775 CPU...............................................................................80
Figure 5-5: GAI 2107695 Cooling Kit .........................................................................................81
Figure 5-6: Securing the Heat sink to the PCB Board .............................................................82
Figure 5-7: DDR2 Channels........................................................................................................83
Figure 5-8: Installing a DIMM......................................................................................................85
Step 1: Figure 5-9: Clear CMOS Jumper............................................................................87
Figure 5-10: COM Port Pin 9 Setting Jumper Locations .........................................................88
Figure 5-11: COM Port Pin 9 Voltage Setting Jumper Locations ...........................................90
Figure 5-12: Dual RS-232 Cable Installation.............................................................................92
Figure 5-13: SATA Drive Cable Connection..............................................................................93
Figure 5-14: SATA Power Drive Connection.............................................................................93
Figure 5-15: Dual USB Cable Connection.................................................................................94

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Figure 5-16: PCIe x16 Installation..............................................................................................95
Figure 5-17: Audio Connectors..................................................................................................97
Figure 5-18: LAN Connection.....................................................................................................98
Figure 5-19: Parallel Device Connector.....................................................................................99
Figure 5-20: PS/2 Keyboard/Mouse Connector..................................................................... 100
Figure 5-21: Serial Device Connector..................................................................................... 101
Figure 5-22: USB Device Connection..................................................................................... 102
Figure 5-23: VGA Connector ................................................................................................... 103
Figure 8-1: Intel® Active Management Technology Status Dialog...................................... 105
Figure 8-2: Intel® Current ME Password................................................................................ 107
Figure 8-3: Change Intel® ME Password ............................................................................... 107
Figure 8-4: Verify New Password............................................................................................ 108
Figure 8-5: Intel® AMT Configuration..................................................................................... 108
Figure 8-6: Provision Model .................................................................................................... 108
Figure 8-7: Intel® AMT 3.0 Mode............................................................................................. 109
Figure 8-8: Enterprise .............................................................................................................. 109
Figure 8-9: Enable Network Interface..................................................................................... 110
Figure 8-10: Exit........................................................................................................................ 111
Figure 8-11: Intel® AMT Web Address ................................................................................... 112
Figure 8-12: Intel® AMT Web Login Dialog............................................................................ 112
Figure 8-13: Intel® AMT Web Interface................................................................................... 113

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List of Tables
Table 1-1: Technical Specifications.............................................................................................7
Table 2-1: Supported Intel® Core™2 Duo (Conroe) Processors............................................14
Table 2-2: Supported Intel® Celeron® Processors..................................................................14
Table 2-3: Power Consumption..................................................................................................38
Table 3-1: Package List Contents..............................................................................................42
Table 3-2: Package List Contents..............................................................................................42
Table 4-1: Peripheral Interface Connectors..............................................................................46
Table 4-2: Rear Panel Connectors.............................................................................................47
Table 4-3: ATX Power Connector Pinouts ................................................................................48
Table 4-4: Audio CD In Connector Pinouts...............................................................................49
Table 4-5: CPU Power Connector Pinouts................................................................................50
Table 4-6: DIO Connector Pinouts.............................................................................................51
Table 4-7: +12V Fan Connector Pinouts....................................................................................52
Table 4-8: +12V Fan Connector Pinouts....................................................................................53
Table 4-9: 34-pin FDD Connector Pinouts ................................................................................55
Table 4-10: Front Audio Connector Pinouts.............................................................................56
Table 4-11: Front Panel Connector Pinouts (14-pin) ...............................................................57
Table 4-12: Infrared Connector Pinouts....................................................................................58
Table 4-13: PCIe Power Connector Pinouts..............................................................................59
Table 4-14: SATA Drive Connector Pinouts..............................................................................60
Table 4-15: Serial Connector Pinouts........................................................................................61
Table 4-16: SPDIF Connector Pinouts.......................................................................................62
Table 4-17: TPM Connector Pinouts..........................................................................................63
Table 4-18: USB Port Connector Pinouts..................................................................................64
Table 4-19: PS/2 Connector Pinouts..........................................................................................67
Table 4-20: LAN Pinouts.............................................................................................................67
Table 4-21: RJ-45 Ethernet Connector LEDs............................................................................68

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Table 4-22: USB Port Pinouts.....................................................................................................68
Table 4-23: Parallel Port Connector Pinouts ............................................................................70
Table 4-24: RS-232 Serial Port (COM 1) Pinouts ......................................................................70
Table 4-25: VGA Connector Pinouts..........................................................................................71
Table 5-1: Jumpers......................................................................................................................86
Table 5-2: Clear CMOS Jumper Settings...................................................................................87
Table 5-3: COM Port Pin 9 Setting Jumper Settings................................................................88
Table 5-4: COM Port Pin 9 Voltage Setting Jumper Settings..................................................89
Table 5-5: GAI Provided Cables.................................................................................................91

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Page 1
1 Introduction
Chapter
1

2807940 uATX Motherboard
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1.1 Overview
Figure 1-1: 2807940 uATX Motherboard
The 2807940 uATX form factor motherboard (Figure 1-1) is an LGA775 Intel® Core™2
Quad, Intel® Core™2 Duo or Intel® Celeron® CPU processor platform. Both 45nm core
(Wolfdale, Yorkfield) and 65nm core (Conroe) processors are supported. (For a full list of
supported processors please refer to Section 2.3)
Up to four 2.0 GB 667 MHz or 800 MHz un-buffered DDR2 SDRAM DIMM are supported
by the Intel® Q35 graphics memory controller hub (GMCH). The Intel® Q35 GMCH also
has a single PCI Express x16 (PCIe x16) expansion lane for a PCIe x16 graphics card.
The integrated Intel® ICH9DO I/O controller hub (ICH) supports six SATA II drives with
data transfer speeds of 3.0 Gbps with SATA RAID configuration support. Twelve USB 2.0
channels, one expansion PCIe x4 channel and two expansion PCI channels provide
flexible expansion options. Support for a (optional) trusted platform module (TPM)
provides additional system security during system boot-up.

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1.1.1 2807940 Features
Some of the 2807940 features are listed below.
Supports the following Intel® LGA775 processors:
oIntel® Core™2 Duo (45nm and 65nm)
oIntel® Core™2 Quad (45nm and 65nm)
oIntel® Celeron® (65nm)
Supports four 240-pin 2 GB 667 MHz or 800 MHz DDR2 DIMMs
Six SATA II drives with transfer rates of 3.0 Gbps supported
Twelve USB 2.0 devices supported (eight onboard and four on the rear panel)
Dual GbE Ethernet connectors
uATX form factor
RoHS compliant
SupportsATX power supplies
1.2 2807940 Overview
1.2.1 2807940 Overview Photo
The 2807940 has a wide variety of peripheral interface connectors. Figure 1-2 is a labeled
photo of the peripheral interface connectors on the 2807940.

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Figure 1-2: 2807940 Overview [Front View]
1.2.2 2807940 Peripheral Connectors and Jumpers
The 2807940 has the following connectors on-board:
1 x ATX power connector
1 x Audio connector
1 x CD in connector
1 x Cooling fan connector, CPU