Dell XPS 8500 (Early 2012) - Manual (Page 102)

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Removing the Processor
1 Press the release lever down and then pull it outwards to release it from the
tab that secures it.
2 Extend the release lever completely to open the processor cover.
1 processor cover 2 tab
3 release lever
CAUTION: When removing the processor, do not touch any of the pins inside the
socket or allow any objects to fall on the pins in the socket.
Processor 102