Remove the screws and the retention frame.
Remove the back plate.
Place the mounting parts and aim at the mounting holes.
The concavity faces downward. (Correct)
The concavity faces upward. (Wrong)
Place the washers over the AM2 screws and use the screws to tighten the mounting parts from the back of the motherboard.
Apply the thermal grease evenly to the CPU.
Place the cooler and align it with the holes.
Tighten the screws.
Connect the fan’s connector to the motherboard.