Technical Reference
49
Table 21. Chassis Intrusion Header
Pin
Signal Name
1
Intruder#
2
Ground
Table 22. Processor, Front, and Rear Chassis
(4-Pin) Fan Headers
Pin
Signal Name
1
Ground
(Note)
2
+12 V
3
FAN_TACH
4
FAN_CONTROL
Note: These fan headers use Pulse Width Modulation control for fan speed.
Table 23. Back Panel CIR Emitter (Output) Header
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
Table 24. Front Panel CIR Receiver (Input) Header
Pin
Signal Name
1
Ground
2
LED
3
NC
4
Learn-in
5
5 V standby
6
VCC
7
Key (no pin)
8
CIR Input
