Installing and Replacing Desktop Board Components
Front Panel Header
Figure 24, A on page 44 shows the location of the multi-colored front panel header. Table 5 shows the pin assignments for the front panel header.
Table 5. Front Panel Header Signal Names
Pin | Description | In/Out | Pin | Description | In/Out |
|
|
|
|
|
|
| Hard Drive Activity LED |
|
| Power LED |
|
|
|
|
|
|
|
1 | Hard disk LED | Out | 2 | Front panel green LED | Out |
|
|
|
|
|
|
3 | Hard disk active LED | Out | 4 | Front panel yellow LED | Out |
|
|
|
|
|
|
| Reset Switch |
|
| On/Off Switch |
|
|
|
|
|
|
|
5 | Ground |
| 6 | Power switch | In |
|
|
|
|
|
|
7 | Reset switch | In | 8 | Ground |
|
| Power |
|
| Not Connected |
|
|
|
|
|
|
|
9 | Power | Out | 10 | No pin |
|
|
|
|
|
|
|
Alternate Front Panel Power LED Header
Figure 24, B on page 44 shows the location of the alternate front panel power LED header. If you have a three-pin power LED cable, connect it to this header.
IEEE 1394a Header
See Figure 24, C for the location of the blue IEEE 1394a header. Table 6 shows the pin assignments for the header.
Table 6. IEEE 1394a Header Signal Names
Pin | Signal Name |
|
|
1 | TPA1+ |
|
|
3 | Ground |
5TPA2+
7+12 V
9Key (no pin)
Pin | Signal Name |
|
|
2 | TPA1- |
|
|
4 | Ground |
6TPA2-
8+12 V
10Ground
45
