Asus P8B-E/4L - Manual (Page 31)

ASUS P8B-E/4L 2-13
3. Connect the CPU fan cable to the connector on the motherboard labeled
CPU_FAN1.
DO NOT forget to connect the CPU fan connector! Hardware monitoring errors
can occur if you fail to plug this connector.
2.3.3 Uninstalling the CPU heatsink and fan
To uninstall the CPU heatsink and fan:
1. Disconnect the CPU fan cable from
the connector on the motherboard.
2. Rotate each fastener
counterclockwise.
3. Pull up two fasteners at a time in
a diagonal sequence to disengage
the heatsink and fan assembly from
the motherboard.
A
A
B
B
A
A B
B
4. Carefully remove the heatsink and fan assembly from the motherboard.