Installing and Replacing Desktop Board Components
47
Table 9. Back Panel CIR Header Emitter (Output) Header Signal Names
Pin Signal
Name
Pin Signal
Name
1
Emitter Out 1
2
Emitter Out 2
3 Ground
4 Key
(no
pin)
5
Jack Detect 1
6
Jack Detect 2
Chassis Intrusion Header
Figure 23, F 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 10 shows the pin assignments and signal names for the chassis intrusion header.
Table 10. Chassis Intrusion Header Signal Names
Pin Description
1
Intruder
2 Ground
Front Panel Header
Figure 23, H shows the location of the front panel header. Table 11 shows the pin
assignments and signal names for the front panel header.
Table 11. 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
