Lexmark 4227 - Manual (Page 19)

13
Chapter 1: Getting Started
Getti
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g Started
4
If needed, use a ballpoint pen to push the interface mode
switch to the On position for RS-422 interface. The default is
RS-232 interface.
5
Fasten the clip wires to the serial cable. You will hear a click.
6
Connect the other end of the serial cable to your computer.