- 162 -8. AppendixThe duplex unit adds the function of two-sided printing, using less paper and making largedocuments easier to handle. It also enables booklet printing, which uses even less paper andmakes large documents even easier to handle.The duplex unit slides straight into the rear of the printer and requires no tools to install.1 Turn off your printer, and then unplug the AC cord and the Ethernet or USBcable.• Installing options while your printer is turned on may damage your printer and duplex unit.2 Remove the two strips of protective tape.3 Remove blind cover of the printer back.4 Ensure that the duplex unit is the right way up, as shown, and push it into theslot at the rear of the printer.Push the duplex unit all the way in until it stops and latches home.• Ensure that the duplex unit is properly installed.5 Plug the AC cord and Ethernet or USB cable into your printer, and then turn onthe power switch.Installing the Duplex Unit (C824n, C834nw Only)Model Number:N35320A
