Lexmark 4227 - Manual (Page 102)

Chapter 5: Printer Options
96
P
rinter Options
Tractor 2 Feeder
The Tractor 2 Feeder attaches to the front of your printer and
provides dual tractor capability with a second tractor feed for
continuous forms. This option lets you have two different types of
continuous forms loaded on your printer at the same time. (A
convenient manual feed tray on top of the feeder allows you to
manually feed cut sheets or envelopes while the feeder is
installed.)