English Product Guide

Installing and Replacing Desktop Board Components
47
Front Panel Header
See Figure 21, C for the location of the front panel header. Table 8 shows the pin
assignments for the front panel header.
Table 8. Front Panel Header Signal Names
Pin Signal Name In/Out Pin Signal Name 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 21, D 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 front panel power LED cable, connect it to this header.
Table 9 shows the pin assignments for th
e altern
ate front panel header.
Table 9. Alternate Front Panel Power LED Header Signal Names
Pin Signal Name In/Out
1 Front panel green LED Out
2 No pin
3 Front panel yellow LED Out