Meaning – The term port, refers to a connection point or interface between a computer and an external or internal device. Internal ports may connect such devices as hard drives and CD ROM or DVD drives; external ports may connect modems, printers, mice, and other devices.

It also refers to the representation of a physical connection to the link hardware. A port is sometimes referred to as an adapter; however, there can be more than one port on an adapter. One or more ports are controlled by a single DLC process.

In the Internet suite of protocols, it refers to a specific logical connector between the Transmission Control Protocol (TCP) or the User Datagram Protocol (UDP) and a higher-level protocol or application.

Example of usage“USB ports are one of the most common computer ports in use today. They are hot-pluggable external connectors with 4 pins (1 for power supply, 2 for data, and 1 for a ground connection), measure 4.5 mm by 11.5 mm, and come with a maximum length cable of 5 meters.”