AMD GA-K8NSC-939 - Manual (Page 20)

GA-K8NSC-939 Motherboard - 20 -
English
3/4) CPU_FAN / SYS_FAN (Cooler Fan Power Connector)
The cooler fan power connector supplies a +12V power voltage via a 3-pin power connector and
possesses a foolproof connection design.
Most coolers are designed with color-coded power connector wires. A red power connector wire
indicates a positive connection and requires a +12V power voltage. The black connector wire is the
ground wire (GND).
Please remember to connect the power to the cooler to prevent system overheating and failure.
Caution!
Please remember to connect the power to the CPU fan to prevent CPU overheating and failure.
CPU_FAN
SYS_FAN
1
Pin No. Definition
1 GND
2 +12V
3 Sense
1
5) NB_FAN (Chip Fan Power Connector)
If you install in wrong direction, the chip fan will not work and sometimes the chip fan will even be
damaged. (Usually black cable is GND.)
Pin No. Definition
1 +12V
2 GND
1