Tray 2 (Lower Feeder Unit); Kit Contents - Oki MC160N User Manual

Tray 2 (Lower Feeder Unit)

You can install up to one optional lower feeder unit (Tray 2). The lower feeder
unit increases your machine's media feed capacity by 500 sheets.

Kit Contents

Lower feeder unit with a tray (500-sheet capacity)
249 Installing Accessories