Asus P4B533-V manual Retention Hole Retention Lock

2.Position the fan with the retention mechanism on top of the heatsink. Align and snap the four hooks of the retention mechanism to the holes on each corner of the module base.

Make sure that the fan and retention mechanism assembly perfectly fits the heatsink and module base, otherwise you cannot snap the hooks into the holes.

Retention Hole

Retention Lock

Retention Hook Snapped to the Retention Hole

Keep the retention locks lifted upward while fitting the retention mechanism to the module base.

2-8 Chapter 2: Hardware information