Epson AcuLaser C9100 Reference Manual page 36

With Optional 500-sheet/1500-sheet Paper Cassette Unit A3
installed:
MP tray
Lower Cassette 1
Lower Cassette 2
Lower Cassette 3
Lower Cassette 4
Note:
❏ If you make paper size settings or paper source settings in your
application, these settings may override the printer driver settings.
❏ If you select an envelope for the Paper Size setting, it can be fed only
from the MP tray regardless of the Paper Source setting.
❏ You can change the priority of the MP tray by using the
setting in the control panel's Setup Menu. For details, see "Setup
Menu" on page 351.
36
Paper Handling