Asus P1-AH2 - Manual (Page 24)

2-8 Chapter 2: Basic installation
2.7.3 Installing the heatsink and fan
The AMD Athlon™ 64/AMD Athlon™ 64 X2/ AMD Sempron™ processor
requires a specially designed heatsink and fan assembly to ensure optimum
thermal condition and performance.
Follow these steps to install the CPU heatsink and fan.
1. Place the heatsink on top of the installed CPU, making sure that the
heatsink fits properly on the retention module base.
• The retention module base is already installed on the motherboard
upon purchase.
• You do not have to remove the retention module base when
installing the CPU or installing other motherboard components.
CPU Fan
CPU Heatsink
Retention bracket
Retention bracket lock
Retention Module Base