ECS K7AMA User Manual page 11

4. Match the Pin-1 corners and insert the processor into the
socket. No force is required and the processor should drop into
place freely.
5. Swing the locking lever down and hook it under the catch on
the side of the socket. This secures the CPU in the socket.
6. All processors should be installed with a combination
heatsink/cooling fan (the original fan is recommended, the
others' fan is not), connect the cable from the fan to the CPU
fan power connector CPUFAN1.
See the Setting Jumper Switches section for detail information on
CPU System Bus settings.
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