Dell Inspiron 537s (Mid 2009) - Manual (Page 15)

6. Gently lift the processor to remove it from the socket.
Leave the release lever extended in the release position so that the socket is ready for the new processor.
Replacing the Processor
1. Follow the procedures in Before You Begin .
2. Unpack the new processor, being careful not to touch the underside of the processor.
3. If the release lever on the socket is not fully extended, move it to that position.
Inspiron 535s/537s/545s
1 processor 2 release lever
3 socket
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.
CAUTION: Ground yourself by touching an unpainted metal surface on the back of the computer.
CAUTION: When replacing the processor, do not touch any of the pins inside the socket or allow any objects to fall on the pins in the socket.
CAUTION: You must position the processor correctly in the socket to avoid permanent damage to the processor and the computer when you turn
on the computer.