Samsung CLP-510 Series - Manual (Page 241)

D.4
6 Holding the memory DIMM by the edges, align the notches
on the memory DIMM with the grooves at the top of the
memory DIMM slot.
7 Insert the ends of the memory DIMM into the slots on the
latches.
8 Push the DIMM straight into the DIMM slot until it snaps into
place. Make sure the latches fit over the notches located on
either side of the DIMM.
N OTE : If you have difficulty inserting the memory DIMM or closing
the latches, make sure the notches on the bottom of the DIMM are
aligned with the grooves in the DIMM slot.
Groove
Notch
Latch
Notch
I NSTALLING P RINTER O PTIONS