IBM 2158240 - Aptiva E - 2158 Maintenance And Service Manual page 121

Pentium II Processor Installation
Follow these steps to install the Pentium II processor module with heat sink
and fan to the socket on the system board.
•
Locate the retention mechanism around the processor socket. Fold out the
retainers.
•
With the processor module electrical contacts pointing downward, align the
processor to the posts of the retention mechanism, then lower it down.
CAUTION: The electrical contacts of the Pentium II module are slotted in such
a way that the module only fits in one direction. Make sure that the
module groove matches the one on the processor socket.
Repair Information 89