Brother HL-4050CDN EN - Manual (Page 104)

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e
Put the two SO-DIMM covers back on (both the plastic one (1) and the metal one (2)).
f
Reconnect the interface cable to your printer. Plug the printer back in, and then turn on the power switch.
Note
To make sure that you have installed the SO-DIMM properly, you can print the printer settings page that
shows the current memory size. (See Menu table on page 77.)
2
1