HP ProLiant DL580 G4 Server - Manual (Page 75)

Memory options 75
4. Remove or install the DIMM.
IMPORTANT: Be sure to observe all DIMM installation requirements for the desired memory
mode.
IMPORTANT: DIMMs do not seat fully if turned the wrong way.
5. Close the memory board.
IMPORTANT: Be sure that the locking switch is unlocked. The memory board will not seat in
the server if the locking switch is locked.
6. Install the memory board.