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Installing and Replacing Desktop Board Components
47
Serial Port Header
See Figure 21, E for the location of the serial port header. Table 10 shows the pin
assignments for the header.
Table 10. Serial Port Header Signal Names
Pin Signal Name Pin Signal Name
1 DCD 2 RXD#
3 TXD# 4 DTR
5 Ground 6 DSR
7 RTS 8 CTS
9 RI 10 No Connection
Chassis Intrusion Header
Figure 21, F on page 44 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. Table 11 shows the pin assignments
for the c
hassis intrusion
header.
Table 11. Chassis Intrusion Header Signal Names
Pin Description
1 Intruder
2 Ground
Alternate Front Panel Power LED Header
Figure 21, H 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 12
shows
the p
in assignments for the alternate front panel header.
Table 12. 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