Dell Latitude CPi A - Manual (Page 45)

Dell Latitude CPiA Service Manual 37
When you reinstall the processor module in the system board, make sure you
press down evenly at all four corners of the module. When the processor
module is seated, all four corners must be at the same height. If one or more
corners of the module are higher than the others, the module is not seated
correctly. To ensure the processor module is seated correctly, look at the
holes on the processor module fence. You should see no less than the top half
of the holes all the way around the processor module (see Figure 27).
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processor module
processor module fence
fence holes