Installing and Replacing Desktop Board Components
41
Connecting to the Alternate Front Panel Power LED
Header
Figure 19, D on page 39 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 7 shows the pin assignments for the alternate front panel power LED header.
Table 7. 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
Connecting to the Front Panel Header
Before connecting to the front panel header, observe the precautions in "Before You
Begin" on page
23. See Figure 19, E on page 39 for the location of the multi-colored
front panel header.
Table 8 shows the pin assignments for the front panel header.
Table 8. 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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