Epson 1170 - Manual (Page 88)

Cut-Sheet Feeder
Assembling the double-bin cut-sheet feeder
You can attach the single-bin cut-sheet feeder and high-capacity
cut-sheet feeder to create a double-bin cut-sheet feeder. Follow
these steps:
1. Remove the gear cover from the back of the high-capacity
cut-sheet feeder and store it in a safe place.
2. Hold the single-bin cut-sheet feeder in both hands. Fit the
notches in the single-bin cut-sheet feeder over the mounting
posts on the rear of the high-capacity cut-sheet feeder.
Using the Printer Options 4-9