Datasheet

Technical Reference
53
Table 19. 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 three chassis fan connectors:
• Front chassis fan
• Rear chassis fan
• Auxiliary fan connector
Table 20 lists the signal names for the front and rear chassis fan connectors. Table 22 lists the
signal names for the auxiliary fan connector.
Table 20. Front and Rear Chassis Fan Connectors
Pin Signal Name
1 FAN_CONTROL
2 +12 V
3 FAN_TACH
Table 21. Auxiliary Fan Connector
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.