HP ProLiant ML310 G2 Server - Manual (Page 39)

Hardware Options Installation 39
6. Release the processor locking lever, and remove the processor.
To replace the component:
1. Open the processor retaining bracket.
2. Place the processor into the processor socket.
3. Close the processor locking lever.
CAUTION: To prevent possible server malfunction or damage
to the equipment, be sure to align the processor pins with the
corresponding holes in the socket.