Asus SK8V - Manual (Page 31)

ASUS SK8V motherboard 2-9
2. Attach one end of the retention bracket to the retention module base.
3. Align the other end of the retention bracket (near the retention bracket
lock) to the retention module base. A clicking sound denotes that the
retention bracket is in place.
Make sure that the fan and heatsink assembly perfectly fits the
retention mechanism module base, otherwise you cannot snap the
retention bracket in place.
Your boxed CPU heatsink and fan assembly should come with
installation instructions for the CPU, heatsink, and the retention
mechanism. If the instructions in this section do not match the CPU
documentation, follow the latter.