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Installing the automatic two-sided printing accessory
You can print on both sides of a sheet of paper automatically when the automatic two-sided printing
accessory (duplex unit) is installed on the printer. The duplex unit comes with the HP Officejet Pro
K850dn Color Printer. It can also be ordered separately. See
HP supplies and accessories. For
information on using the duplex unit, see
Printing on both sides (duplexing).
To install the duplex unit
1. Push the buttons on both sides of the rear-access panel.
2. Remove the panel from the printer.
3. Slide the duplex unit into the printer until the unit locks into place.
NOTE Do not press the buttons on either side of the duplex unit when installing; use
them only for removing the unit from the printer.
10 Chapter 2 Installing accessories ENWW