Brother DCP-L2520DW Basic User's Manual page 38

Menu selections
Page Layout
2-sided
(available only for certain
models)
Options
Off(1 in 1)
2 in 1 (P)
2 in 1 (L)
4 in 1 (P)
4 in 1 (L)
Off
1sided→2sided L
1sided→2sided S
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