Dell 3115 Color Laser User Manual page 107

5. Pull the tray out of the mult rinter until it stops. Hold the tray with both hands, lift
the fr htly, and remove it from the multifunction printer.
6. Join the optional 550-sheet paper feeder and ifunction printer by tightening the two
screws provided with the fe a coin or similar object.
7. Inse into the multifunction printer, and push until it stops.