Basic operations > 10WITH ACCESSORIES14. SerialconnectorFor connecting the serial cable.15. Duplex unitconnectorFor connecting the duplex unit.NO. NAME DESCRIPTION1. Offset catchtray (optional)Allows you to stagger the output position foreach print job (offset output).2. Cover D(optional)Open this when paper is jammed inside theoffset catch tray.3. Rear tray Use this tray if you want to reduce curling ofpaper when printing heavyweight paper. Printjobs are output here with the printed sidefacing up.4. Duplex unit(Cover C)Enables 2 sided printing. When paper isjammed inside the duplex unit, it is describedas cover C.5. Rear outputtray leverWhen the rear tray has been installed, thepaper output location can be switched betweenit and the centre output tray. Raise the lever tooutput to the rear tray and lower the lever tooutput to the centre output tray.6. A4 universaltray (optionalTray3 andTray4)Can install up to two levels of an Letter/A4universal tray (550) to this printer.7. RightdetachablecoverRemove this when installing optionalaccessories such as hard disk, compact flashand additional DDR memory module.NO. NAME DESCRIPTION1 234567