Brother HL-4040CDN - Manual (Page 104)

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Installing extra memory
5
Note
Always turn off the printer power switch before installing or removing the SO-DIMM.
a
Turn off the printer power switch, and then unplug the printer. Disconnect the interface cable from the
printer.
b
Remove the two SO-DIMM covers (both the plastic one (1) and the metal one (2)).
c
Unpack the SO-DIMM and hold it by its edges.
CAUTION
To prevent damage to the printer from static electricity, DO NOT touch the memory chips or the board
surface.
d
Hold the SO-DIMM by the edges and align the notches in the SO-DIMM with the protrusions in the slot.
Insert the SO-DIMM diagonally (1), then tilt it toward the interface board until it clicks into place (2).
2
1
1 2