Connectors and COM Ports A serial port on a PC is a male 9-pin connector (DE-9 D-sub). Early PCs had two 9-pin connectors or one 9-pin and one 25-pin (DB-25). On a PC, serial ports are called "COM ...

Our baud rate is 38.4Kbps and below. (25 pin serial port would support being configured via software to either RS422 or RS232) 3) If there is code available I know who would like to see it. RS422 and ...