Serial Interface Cable (Rs-232C) - Lexmark FORMS 249X Technical Reference

Serial Interface Cable (RS-232C)

The recommended RS-232C serial cable is 50 feet long. This cable works with
the IBM PS/2 series and other compatible host systems using a 25-pin male
connector. The maximum total capacitance of the cable and the connector
should be less than 2500 pF, or it will delay the signal transition by more than
4%.
Following is a diagram of the serial cable (Lexmark part number 1038693 (15.24
m or 50 ft.)).
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Section 6: Using the Printer Interface