Brother HL-1660e Series User Manual page 260

USER'S GUIDE
4–76
BIND=LONG
Fig. 4-9 Binding
4. Press the SET switch to exit the DUPLEX MODE.
The printer exits from the setting mode to the off-line state.
5. Press the SET switch again to exit the FEEDER switch setting mode to
the printer off-line state.
Note
The duplex printing unit can handle letter, A4, legal, executive, and B5
sizes of paper. It can not handle shorter sizes of paper than B5 (250mm-
9.8 inches long).
BIND=SHORT