What paper width restrictions apply when loading paper into the HP DesignJet T520?

All paper must be 280 mm (11 in) or wider, and A4 and letter paper should not be loaded in landscape orientation. Sheets of width 329 mm (12.95 in) or less should be loaded from the multi-sheet tray rather than the single-sheet input slot. Make sure the printer wheels are locked (brake lever pressed down) to prevent the printer from moving during the loading process.