HP ProLiant DL560 Server - Manual (Page 58)

58 HP ProLiant DL560 Server User Guide
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.
CAUTION: To prevent possible server malfunction or damage
to the equipment, be sure to completely close the processor locking
lever.
7. Open the latches on the corresponding PPM slot.
8. Install the PPM.