Asus Maximus Extreme - Manual (Page 69)

ASUS Maximus Extreme 2-41
2.8.4 Installing the optional fans
Install the optional fan only if you are using a passive cooler or a water cooler.
Installing the optional fan with an active CPU cooler will interfere with the airflow
and destabilize the system.
1. Position the fan above the pipe
and heatsink assembly.
2. Fit the fan to the grooved edge of
the heatsink.
3. Carefully push down the fan until
it snugly fits the heatsink, then
connect the fan cable.
4. The photo shows the fan installed
on the motherboard.
Optional fan on one side fins
Plug the optional fan cables to the CHA_FAN2, CHA_FAN3 or PWR_FAN
connector on the motherboard.
When you are using water-cooling modules, make sure to install TWO optional
fans to obtain a more effective heat dissipation.