Dell OptiPlex 960 (Late 2008) - Manual (Page 65)

4. Reroute cables removed earlier through the cable guides on the heatsink assembly. Reconnect them as needed.
Removing the Processor
1. Perform the procedure Before Working on Your Computer .
2. Remove the heatsink assembly (see Removing the Heatsink Assembly ).
3. Open the processor cover by sliding the release lever from under the center cover latch on the socket. Then, pull the lever back to release the
processor.
4. Gently remove the processor from the socket.
Leave the release lever extended in the release position so that the socket is ready for the new processor.
1 heatsink assembly 2 heat-sink assembly bracket
3 captive screw (2)
NOTICE: Unless a different heatsink is required for the new processor, reuse the original heatsink assembly when you replace the processor.
NOTICE: 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.
1 center cover latch 2 processor cover
3 processor 4 socket
5 release lever