Connecting The Cpu Fan Cable; Cpu Fan Connector - Asus P4B-MX User Manual

3. Push down the locks on the retention mechanism to secure the
heatsink and fan to the module base.
When secure, the retention locks should point to opposite directions.
Figure 2-11 Fan and Retention Mechanism Installed and Locked

2.4.4 Connecting the CPU fan cable

When the fan, heatsink, and the retention mechanism are in place,
connect the CPU fan cable to the connector on the motherboard labeled
CPU_FAN.
Figure 2-12

CPU Fan Connector

ASUS P4B-MX motherboard user guide
CPU Fan Connector
(CPU_FAN)
2-9