Installing and Replacing Desktop Board Components
53
Alternate Front Panel Power LED Header
Figure 20, E 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 10 lists
the pin as
signments
for the alternate front panel header.
Table 10. Alternate Front Panel Power LED Header Signal Names
Pin Signal Name In/Out
1 Front panel LED+ Out
2 No pin
3 Front panel LED- Out
Intel FCFH Header
Figure 20, F shows the location of the Intel FCFH header. Table 11 lists the pin
assignments and signal names for the Intel FCFH header.
Table 11. Intel FCFH Header Signal Names
Pin Description
1 Ground
2 FCFH#
Chassis Intrusion Header
Figure 20, G shows the location of the chassis intrusion header. This header can be
connected to a mechanical switch on the chassis to detect if the chassis cover is
removed. This switch should be in the open position when the chassis cover is
installed and closed when the cover is removed.
Table 12 lists the pin assignments and signal names for the chassis intrusion
header.
Table 12.
Chassis Intrusion Header Signal Names
Pin Description
1 Intruder#
2 Ground