DFI LanParty nF4 User Manual page 27

3. Place the heat sink on top of the CPU. Now hook one side of
the retention clip onto the retention module base by fitting the
holes on the retention clip into the retaining tabs of the retention
module base.
Retaining
tabs
Hardware Installation
Retention clip
Side View
Top View
Retaining
tab
Retention module base
Retaining
tabs
2
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