Micron Millennia Series Technical Reference Manual page 42

I N S T A L L I N G A N D R E M O V I N G H A R D W A R E
6
Installing Memory
4 Apply even downward pressure until the DIMM is fully seated.
Figure 15.
5 Close the latching levers. If they will not latch, verify that the memory is installed correctly and
has been pressed down completely.
6-42
Latching Levers
Alignment Keys
DIMM Sockets