The RS-232C Serial Interface Card installs into the printer's internal port. It supports a standard RS-232C interface using a 25-pin D-shell female connector. For use with Lexmark printers that contain an open slot.

-Configuration settings for the serial interface are available using the Serial Opt Menu from the printer's operator panel. Baud rates from 1200 to 115.2K are supported.
-Baud rates:1200, 2400, 4800, 9600*, 19.2K, 38.4K, 57.6K and 115.2K; 7 bit or 8* data bits; Parity - Odd, Even, None*, Ignore; Start and Stop Bits; DSR/DTR Data Flow control with DTR pacing, DTR/DSR, XON/XOFF, XON/XOFF/DTR, or XON/XOFF/DTR/DSR flow control protocols.
-RS-422 is not supported.
-See the Technical Reference for more information about the serial and parallel interfaces.