Epson EPL-N2050 Setup Manual page 30

3. While holding the Duplex Unit in both hands, align the edges
on the unit with the guide rails in the printer.
c
4. Slowly tilt it and slide it into the printer until it clicks as shown
in the illustration below. Do not force the unit into the printer,
as it is designed to join smoothly.
5. Close the rear cover of the printer.
6. Turn the printer on when you finish installing the option.
24
Installing the Options
Caution:
Do not touch the areas specified on the caution labels inside
the rear cover. If the printer has been in use, these areas can
be very hot.