Which port allows you to connect additional devices to a computer?

The USB port is designed specifically for connecting a wide range of additional devices to a computer, including peripheral devices such as keyboards, mice, printers, external hard drives, and many others. USB ports support both data transfer and power supply, making them versatile for numerous applications. This functionality is a key reason why USB ports are prevalent in modern computers.

In contrast, while the HDMI port is primarily used for video and audio output to displays and does not generally facilitate additional device connections, the Ethernet port is utilized for network connectivity rather than peripheral connection. The VGA port, like HDMI, is mainly for video output, typically connecting a computer to a monitor. Thus, the USB port stands out as the primary interface for connecting additional devices.