Dell 5535 Mono Laser User Manual page 77

Without an optional StapleSmart II Finisher
Duplex (two-sided) printing
Note: Notice the maximum fill line on the side of the tray which indicates the maximum height for loading paper.
Do not overload the tray.
7
Insert the tray.
With an optional StapleSmart II Finisher
Duplex (two-sided) printing
Loading paper and specialty media
77