What describes a physical connector at the back of a computer for connecting peripheral devices?

The term that describes a physical connector at the back of a computer for connecting peripheral devices is "port." In computing, a port serves as an interface point where devices can connect to the computer to transmit data and facilitate communication between the computer and peripheral equipment, such as printers, keyboards, mice, and external storage devices.

Ports can come in various forms, depending on the type of connection they support, including USB ports, HDMI ports, and ethernet ports. Each type of port is designed to accommodate specific types of connectors, ensuring compatibility between the computer and the connected peripheral device. The designation of "port" is widely used in technical discussions and documentation, making it the most appropriate choice among the provided options.