Dell 2155cn User Manual page 62

CAUTION:
the optional 250-sheet feeder.
6 Secure the optional 250-sheet feeder to the printer by tightening the two
screws provided with the feeder, with a coin or similar object.
NOTE:
printer.
7 Insert the standard 250-sheet tray into the printer, and push until it stops.
60
Installing Optional Accessories
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Be careful not to pinch your fingers when lowering the printer onto
The screw hole is located in 216 mm recess from the front of the