Asus V4-M3A3200 - Manual (Page 28)

2-8 Chapter 2: Basic installation
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.
CPU Fan
CPU Heatsink
Retention bracket
Retention bracket lock
Retention Module Base
2. Attach one end of the retention bracket to the retention module base.
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