Lexmark XC9325
Remove the standard tray.
Note: Do not throw away the standard tray.
Unpack the envelope tray, and then remove all the packing material.
Insert the envelope tray.
To make the envelope tray available for print jobs, from the home screen, touch Settings > Device > Maintenance > Configuration Menu > Tray Configuration > Envelope Tray Setup > On.
Follow these steps in loading the envelope tray for you to print envelopes in bulk.
Add the input capacity of your printer by installing the optional 2520-sheet tandem tray.