Brother HL-4200CN - Manual (Page 164)

APPENDIXES A - 10
Adding Expansion Memory
1
Turn the printer off, and then unplug the power cord from the AC power outlet/socket.
Caution
Before installing the optional accessories, turn the printer off and remove the power plug from the
outlet/socket. Installing optional accessories without turning the printer off could result in an electric
shock.
2
Loosen the two screws on the interface board
located at the back of the printer.
3
Hold the two handles on the interface board and
slowly pull the interface board towards you, then lay
it on a desk or table.
4
Hold the expansion memory module by the edges
and align the notches in the module with the
protrusions in the slot.
5
Insert the memory module diagonally (1), then tilt it
toward the interface board until it clicks into place
(2).
To remove the memory module, open the retaining clips on both sides of the module by pushing them
outward, grasp both edges of the module and pull it out straight.