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USB

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 allows peripherals to be connected without the need to plug expansion cards into the computer's ISA, EISA, or PCI bus, and to improve plug-and-play capabilities by allowing devices to be hot-swapped.

A USB hub can connect mouse devices, keyboards, gamepads, scanners, digital cameras, printers, external storage, networking components and other peripherals. Used extensively to connect non-networked printers, USB simplifies connecting several printers to one computer. As of 2004 there were about 1 billion USB devices in the world. 

Ralink supports USB interfaces with the following chipset solutions: See right for product briefs

RT5201U

RT2800U

RT2501U