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Communications port

Updated: 02/07/2022 by Computer Hope

Alternatively called the com port, the communications port is serial communication used to connect devices, such as a modem. Usually, communication ports are designated as COM1, COM2, COM3, and COM4 on computers running Microsoft Windows.

Related information

  • How to install a computer modem.
  • Modem help and support.

Modem terms, Serial, Serial port

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