The full form of USB is Universal Serial Bus. It’s used on Technology ,Specifications & Standards in Worldwide

Universal Serial Bus (USB) is an interface standard developed for short-distance data communications that define the cables, connectors, and protocols used for connection, communication, and power supply between computers and electronic devices. USB is a plug-and-play interface that allows the easy connection of peripheral devices such as printers, scanners, keyboards, digital cameras, external hard drives and many other peripherals to a computer.