Installing and Replacing Desktop Board Components
41
Alternate Front Panel Power LED Header
Figure 18, E on page 38 shows the location of the alternate front panel power LED
header. Pins 1 and 3 of this header duplicate the signals on pins 2 and 4 of the front
panel header. If your chassis has a three-pin power LED cable, connect it to this
header.
Table 11 shows the pin assignments for the al
ternate front panel power LED header.
Table 11. Alternate Front Panel Power LED Header Signal Names
Pin Description In/Out
1 Front panel green LED Out
2 No pin
3 Front panel yellow LED Out
Front Panel Header
Before connecting to the front panel header, observe the precautions in "Before You
Begin" on page 24. See Figure 18, F on page 38 for the location of the multi-colored
front panel
header.
Table 12 shows the pin assignments for t
he front panel header.
Table 12. 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
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