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Universal Serial Bus (USB) is a popular serial bus standard to interface devices designed for computers, video game consoles, PDAs, cellphones, TVs and stereos, MP3 players and portable memory devices.

The radio spectrum-based USB implementation is known as Wireless USB.

USB connects peripherals with no need to plug expansion cards into the computer's ISA, EISA, or PCI bus, and improves plug-and-play capabilities with hot-swapping.

USB connects mouse devices, keyboards, gamepads, scanners, digital cameras, printers, external storage, networking components and other peripherals.