Mounting slot
Mounting bracket 
Paper stops
3 Insert the mounting brackets into the slots on top of the printer, finisher, output expander, or previously installed
4 Attach the top cover to the mailbox.
5 Place the tips of the wire paper bail into the ends of the plastic bracket so that the bail curves downward.
The bail rests in the output tray of the expander below it, or in the printer output bin.
6 Adjust the paper stops for the appropriate paper size.
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