IBM S544-5343-03 - Manual (Page 166)

6. At the back of the support unit, hold down the cardboard packing material that is
inside the paper tray as you pull the paper tray out of the support unit.
7. Remove the cardboard from inside the paper tray and set aside the locking clips
that are packed inside the tray.
8. Save the packing materials for future use.
9. If you have two trays, go to “Stacking Two 500-Sheet Paper Trays” on page 147.
Otherwise, go to “Placing the Printer on the Paper Tray Support Unit” on
page 151.
146 Network Printer 17: User’s Guide