HP Officejet J6480 All-in-One Printer - Manual (Page 36)

Install the duplexer
You can print on both sides of a sheet of paper automatically. For information on using
the duplexer, see
Print on both sides (duplexing) .
To install the duplexer
1. If you are installing the duplexer for the first time, remove the tape and cardboard
protecting the rear of the device.
2. Slide the duplexer into the device until the unit locks into place. Do not press the
buttons on either side of the duplexer when installing the unit; use them only for
removing the unit from the device.
Chapter 2
32 Use the device