Asus MOTHERBOARD K8N-E - Manual (Page 30)

2-8 Chapter 2: Hardware information
2.3.3 Installing the heatsink and fan
The AMD Athlon™ 64 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.
Retention Module Base
CPU Heatsink
CPU Fan
Retention bracket lock Retention bracket
Make sure that you use only qualified heatsink and fan assembly.
• 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.
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.