Kyocera Mita FS-1900N Operation Manual page 239

Adding Optional Devices
4
Check Paper Feeder in the Device Options list box. Paper Feeder
(Cassette 1) is the standard printer cassette. If three optional paper
feeders have been installed, check Paper Feeder (Cassette 2), Paper
Feeder (Cassette 3), and Paper Feeder (Cassette 4) sequentially.
5
Click the OK button.
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