Asus M3A78 PRO, User Manual

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1-14 Chapter 1: Product introduction
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.
4. Push down the retention bracket lock on the retention mechanism to secure
the heatsink and fan to the module base.
Make sure that the fan and
heatsink assembly perfectly fits
the retention mechanism module
base; otherwise, you cannot snap
the retention bracket in place.