Datasheet

Technical Reference
49
Table 20. Processor Fan Connector
Pin Signal Name
1 Ground
2 +12 V
3 FAN_TACH
4 FAN_CONTROL
2.8.2.1 Chassis Fan Connectors
The board has two standard and one optional chassis fan connectors:
• Front chassis fan
• Rear chassis fan
• Auxiliary fan connector (optional)
Table 21 lists the signal names for the front and rear chassis fan connectors. Table 22 lists the
signal names for the auxiliary fan connector.
Table 21. Front and Rear Chassis Fan Connectors
Pin Signal Name
1 FAN_CONTROL
2 +12 V
3 FAN_TACH
Table 22. Auxiliary Fan Connector (optional)
Pin Signal Name
1 Ground
2 +12 V
3 FAN_TACH
(Note)
4 FAN_CONTROL
Note: The tachometer output is not monitored by the hardware monitoring and fan control ASIC.