Dell Dimension U7021 Owner's Manual page 107

3 Align the pin-1 corners of the processor and socket.
processor pin-1
indicator
NOTICE:
Socket pins are delicate. To avoid damage, ensure that the processor is aligned properly with
the socket, and do not use excessive force when you install the process. Be careful not to touch or bend
the pins on the system board.
4 Set the processor lightly in the socket and ensure that the processor is level in the socket.
When the processor is positioned correctly, press it with minimal pressure to seat it.
5 When the processor is fully seated in the socket, close the processor cover.
6 Pivot the socket release lever back toward the socket and snap it into place to secure the
processor.
NOTICE:
If you are not installing a processor upgrade kit from Dell, reuse the original heat sink assembly
when you replace the processor.
If you installed a processor replacement kit from Dell, return the original heat sink assembly
and processor to Dell in the same package in which your replacement kit was sent.
release lever
socket pin-1 indicator
processor
processor socket
Removing and Installing Parts
107