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CAUTION
Only the back panel USB, front panel USB, VGA, and PS/2 connectors have overcurrent protection. The Desktop Board's 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.
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.
Back Panel I/O Connectors
The figure below 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.
|
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 |
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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.
Internal I/O Connectors
Audio, Power, and Hardware Control Connectors
The figure below shows the location of the audio, power, and hardware control connectors.
|
Item
|
Description
|
| A |
Front panel audio |
| B |
Auxiliary line input (optional) |
| C |
ATAPI CD-ROM (black) |
| D |
+12 V power connector (ATX12V) |
| E |
Rear chassis fan |
| F |
Processor fan |
| G |
Main power |
| H |
Front chassis fan |
| I |
Chassis intrusion |
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Add-in Board and Peripheral Interface Connectors
The figure below shows the location of the add-in board connector and peripheral connectors for the Desktop Board D845GLVA. Note the following considerations for the PCI bus connectors:
- All of the PCI bus connectors are bus master capable.
- SMBus signals 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.
|
Item
|
Description
|
| A |
PCI bus connector 3 |
| B |
PCI bus connector 2 |
| C |
PCI bus connector 1 |
| D |
Diskette drive |
| E |
Primary IDE |
| F |
Secondary IDE |
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External I/O Connectors
The figure below shows the location of the external I/O connectors.
|
Item
|
Description
|
| A |
Auxiliary front panel powre/sleep/message-waiting LED |
| B |
Front panel |
| C |
Front panel USB |
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Front Panel Connector
This section describes the functions of the front panel connector. The table below lists the signal names of the front panel connector.
Front Panel Connector
|
Pin
|
Signal
|
In/Out
|
Description
|
Pin
|
Signal
|
In/Out
|
Description
|
| 1 |
HD_PWR |
Out |
Hard disk LED pull-up (330 ohm) to +5V |
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 |
| 5 |
Ground |
|
Ground |
6 |
FPBUT_IN |
In |
Power switch |
| 7 |
FP_RESET# |
In |
Reset switch |
8 |
Ground |
|
Ground |
| 9 |
+5 V |
Out |
Power |
10 |
N/C |
|
Not connected |
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Front Panel USB Connector
The figure below is a connection diagram for the front panel USB connector.
Integrator's Note:
Use only a front panel USB connector that conforms to the USB 2.0 specification for high-speed USB devices.
For more information about the front panel connector, see the Product Supplement Document for the Intel® Desktop Board D845GLVA
This applies to:
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