2-sided printing > 492-SIDED PRINTINGThe 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.The duplex unit slides straight into the rear of the printer and requires no tools to install.This printer has the option of Auto Duplex and Manual Duplex printing.A UTO DUPLEX PRINTINGThis option provides automatic two-sided printing only for Letter, A4, Legal 13 and 14 andCustom paper sizes, using paper stocks from 60 - 105g/m2.To carry out Auto Duplex Printing:1. Select File -> Print and click the Properties button.2. Select the input tray (Tray1, Tray2 (optional), Multi Purpose Tray (B430d, B430dnand B440dn) or Manual Feed Tray (B410d, B410dn)) from the Source drop down.3. In the Duplex printing drop down menu, select either Long Edge (Auto) or ShortEdge (Auto) according to your printing preferences.4. If you require further information, click the Duplex Help button.5. Click the Print button.NOTEThe steps in the process relate to Windows XP PCL. Other operating systemwindows may appear slightly different, but the principles are the same.