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Chapter 2
Fan Power Connectors: PFAN1/SFAN1
The PFAN1 (processor fan) & SFAN1 (system fan) connectors provide +12V
power supply for the system cooling fan, via a three-pin connector. When
connecting the wire to the connectors, always take note that the red wire is the
positive and should be connected to the +12V, the black wire is Ground and
should be connected to GND. If the mainboard has a System Hardware Moni-
tor chipset on-board, you must use a specially designed fan with speed sensor
to take advantage of the CPU fan control.
GND
+12V
SENSOR
PFAN1
NOTE: Always consult the vendor for proper CPU cooling fan.
2-18
GND
+12V
SENSOR
SFAN1
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