Epson EPL-N2750 Reference Manual page 140

9. Hold the memory module above the DIMM slot in the
following orientation, then insert it into the slot. Do not apply
too much force.
10. Push one end of the DIMM into the slot until the clip comes
up.
11. With your other hand, push down the other end of the DIMM
into the slot until the clip comes up to retain the memory
module securely.
Using Options
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