Asus P3-P5G33 - P Series - 0 MB RAM User Manual page 25

3. When the fan and heatsink assembly is in place, connect the CPU fan cable
to the connector on the motherboard.
Do not forget to connect the CPU fan connector! Hardware monitoring errors
can occur if you fail to plug this connector.
ASUS P3-P5G33
P5K-VM CPU fan connector
CPU_FAN
CPU FAN PWM
CPU FAN IN
CPU FAN PWR
GND
2-9