Fan Power Connectors: Cfan2/Sfan1 - VIA Technologies P4XB-S User Manual

Chapter 2

Fan Power Connectors: CFAN2/SFAN1

The CFAN2 (CPU fan) and SFAN1 (system fan) run on +12V and maintain
system cooling. When connecting the wire to the connectors, always be
aware 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.
GND
+12V
SENSOR
CFAN2
Note: Always consult the vendor for proper CPU cooling fan.
2-20
GND
+12V
SENSOR
SFAN1