Asus P4P800 SE - Manual (Page 29)

ASUS P4P800 SE motherboard 2-7
2.3.2 Installing the CPU
Follow these steps to install a CPU.
1. Locate the 478-pin ZIF socket on the motherboard.
2. Unlock the socket by pressing the
lever sideways, then lift it up to a
90°-100° angle.
Make sure that the socket lever is lifted up to 90°-100° angle;
otherwise, the CPU does not fit in completely.
Socket Lever
90º~100º angle