Epson AcuLaser C9200 Series - Manual (Page 134)

12. Remove the connector cover located on the back of each optional paper cassette units by removing
the screw.
Note:
You do not need to remove the cover on the lowest unit.
13. Remove the protective tape from the optional paper cassette unit’s cables, and then plug the
connector of the cable into the socket on the next unit up.
EPSON AcuLaser C9200 Series User's Guide
Installing Options 134