Asus P5GDC User Manual page 21

2. Push each of the pins downward
to secure the heatsink and fan
assembly in place.
3. When the fan and heatsink assembly is in place, connect the CPU fan
cable to the connector on the motherboard labeled CPU_FAN1.
P5GDC
Do not forget to connect the CPU fan connector! Hardware monitoring
errors can occur if you fail to plug this connector.
A S U S P 5 G D C A S U S P 5 G D C
A S U S P 5 G D C A S U S P 5 G D C A S U S P 5 G D C
CPU_FAN1
1 - 1 1 1 - 1 1
1 - 1 1 1 - 1 1 1 - 1 1