Kyocera Mita FS-1900N Operation Manual page 187

8
Push the sorter down. The levers of the attachment legs are in the
lock position.
When removing the sorter, unlock the attachment legs by releasing
the levers as shown in the figure one by one, and then lift the sorter.
9
Connect the sorter cable to the printer.
Sorter Cable
B-17
Installing Option Units