In The Optional 250-Sheet Tray - Lexmark E220 User Reference Manual

In the optional 250-sheet tray

1
Grasp the tabs on either side of the tray and pull it completely out of the printer.
2
Before loading paper, push down on the metal plate until it locks into place.
3
If loading A4 or legal-size paper, extend the paper support.
Paper handling
Loading paper
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