Installing and Replacing Desktop Board Components
Table 21. Front Panel Header
|
|
|
| In/ |
|
|
Pin |
| Signal |
| Out |
| Description |
|
|
|
|
|
|
|
|
| Hard Drive Activity LED | ||||
1 |
| HD_PWR |
| Out |
| Hard disk LED |
|
|
| ||||
|
|
|
|
|
| |
3 |
| HDA# |
| Out |
| Hard disk active |
|
|
|
|
|
| LED |
|
|
|
|
|
|
|
Reset Switch
5 | Ground |
| Ground |
7 | FP_RESET# | In | Reset switch |
|
|
|
|
| Power |
| |
|
|
| |
9 | +5 V |
| Power |
|
|
|
|
|
| In/ |
|
Pin | Signal | Out | Description |
|
|
|
|
| Power LED |
| |
|
|
|
|
2 | HDR_BLNK_GR | Out | Front panel |
| N |
| green LED |
|
|
|
|
4 | HDR_BLNK_YE | Out | Front panel |
| L |
| yellow LED |
|
|
|
|
On/Off Switch
6 | FPBUT_IN | In | Power switch |
|
|
|
|
8 | Ground |
| Ground |
|
|
|
|
| Not Connected | ||
|
|
|
|
10 | N/C |
| Not connected |
|
|
|
|
Figure 12. Connection Diagram for Front Panel Header
Hard Drive Activity LED Pins
Pins 1 and 3 can be connected to an LED to provide a visual indicator that data is being read from or written to a hard drive. Proper LED function requires one of the following:
•A SATA hard drive connected to an onboard SATA connector
•A PATA hard drive connected to an onboard PATA connector
•Intel
Reset Switch Pins
Pins 5 and 7 can be connected to a momentary single pole, single throw (SPST) type switch that is normally open. When the switch is closed, the board resets and runs the POST.
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