Intel AW8D - Manual (Page 19)

Hardware Setup
AW8D 2-11
8. Place the heatsink and fan assembly
onto the socket. Align the four fasteners
toward the four mounting holes on the
motherboard.
9. Press each of the four fasteners down
into the mounting holes. Rotate the
fastener clock-wise to lock the heatsink
and fan assembly into position.
10. Attach the four-pin power plug from the
heatsink and fan assembly to the CPU
FAN connector.
※ The installation procedures vary with different types of CPU fan-and-heatsink
assembly. The one shown here is served for demo only. For detailed information
on how to install the one you bought, refer to its installation guidelines.
※ A higher fan speed will be helpful for better airflow and heat-dissipation.
Nevertheless, stay alert to touch any heatsink since the high temperature
generated by the working system is still possible.