Epson Action Laser II User Manual page 14

Multi-media feeder (C812141)
The optional multi-media feeder allows you to feed various-sized
papers into your printer. This tray feeds up to 150 sheets of plain
paper or 15 envelopes.
Epson optional interfaces
If you would like to use this printer with three computers or to
connect two serial or parallel interfaces at the same time, install one
of these interfaces:
32 Kbyte serial interface (C823071)
32 Kbyte parallel interface (C823101)
Introduction
Introduction 3