How do I print on both sides of the page (manual duplex) in Windows?

Load paper face-up in the input tray, then open the printer Properties or Preferences dialog and click the Finishing tab. Check the box for 'Print on Both Sides (Manually)' and click OK to print the first side. After the first side prints, retrieve the stack from the output tray, place it face-down in the input tray, then click Continue on the computer or press the Resume button on the printer.