Samsung CLP 500N - Manual (Page 219)

I NSTALLING P RINTER O PTIONS C.3
C
4 Open the lever on each side of the DIMM slot all the way.
5 Remove the memory DIMM from the antistatic package.
Locate the alignment notches on the bottom edge of the
DIMM.
N OTE : Avoid touching the connection points along the edge of the
memory.
6 Holding the DIMM by the edges, align the notches on the
DIMM with the notches at the top of the DIMM slot.
Connection
points
Notches