Microcom 322M - Manual (Page 26)

Communication Chapter 4
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322M Operator’s Manual
4.1.1 RS-232 Printer Cables
The printer uses a standard through serial cable, typically referred to as a modem cable,
which may be purchased through Microcom Corporation or a local computer supply
company. A NULL-modem cable is not required because the printer is configured as DCE.
For a 25-pin serial communication port
– Use a 25-pin female to 9-pin male cable.
For a 9-pin serial communication port
– Use a 9-pin female to 9-pin male cable.
CAUTION: Connection of a serial port to a parallel port may
result in damage to the printer and / or computer.