Installing and Replacing Desktop Board Components
45
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 pull-up to +5 V 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
Pin Signal Name
1 TPA1+
2 TPA1-
3 Ground
4 Ground
5 TPA2+
6 TPA2-
7
+12 V
8
+12 V
9
Key (no pin)
10
Ground
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