![](http://pdfasset.owneriq.net/e/d3/ed3baca4-3356-4f76-b422-9fdb9525fed3/ed3baca4-3356-4f76-b422-9fdb9525fed3-bg1b.png)
ASUS P4B motherboard user guide
2-5
2.4.2 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.
Figure 2-5 Intel 478-pin ZIF Socket
Figure 2-6 CPU Socket Lever at 90° -100° Angle
Socket Lever
Make sure that the socket lever is lifted up to 90°-100° angle,
otherwise the CPU does not fit in completely.
90 - 100