Follow these steps:
1. Unpack the envelope feeder. Make sure all packing materials are removed.
2. Turn printer power off and unplug the printer.
3. Open the auxiliary tray. (To locate the auxiliary tray, see Figure 4 on page 7.)
4. Remove the envelope feeder slot cover by pulling the cover to the right (1) and
then removing the cover towards you (2). (You may want to save this cover if you
choose to remove the envelope feeder at a later time.)
Chapter 7. Installing Printer Options 169