4.Print a menu map as follows:
(a)Press the + button to access the Information Menu.
(b)Press ENTER once for the menu map.
(c)Press ENTER again to print the menu map.
(d)When the menu map is printed, press ON LINE to exit the menu system.
5.Examine the first page of the menu map.
Near the top of the page, between the two horizontal lines, you will see the current printer configuration. This list should indicate that the duplex unit is now installed.
All that remains is to adjust the Windows printer driver to make full use of the new features.