USB stands for Universal Serial Bus. It is an industry standard for connecting peripheral devices to a computer. USB was developed in the mid-1990s and has since become the most widely used interface for connecting devices such as keyboards, mice, flash drives, printers, cameras, and smartphones to computers. It provides a fast, reliable, and easy-to-use interface that supports both power and data transfer between devices. There are several versions of USB, each with varying data transfer speeds and capabilities. The latest version is USB 4.0.