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Last modified: Monday, February 13, 2006 

Short for Universal Serial Bus, an external bus standard that supports data transfer rates of 12 Mbps. A single USB port can be used to connect up to 127 peripheral devices, such as mice, modems, and keyboards. USB also supports Plug-and-Play installation and hot plugging.

Starting in 1996, a few computer manufacturers started including USB support in their new machines. It wasn't until the release of the best-selling iMac in 1998 that USB became widespread. It is expected to completely replace serial and parallel ports.

Also see USB 2.0.

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For pages about USB . Also check out the following links!

Related Links

Everything USB
Learn about the different flavors of USB and communicate with the USB community.

Linux USB
Provides a central point of information for USB support under Linux.

MacInTouch USB and Peripherals Guide
Offers comprehensive information on Mac-compatible USB devices, as well as solutions for printing and serial communication on new USB Macs that lack serial/LocalTalk ports.

Universal Serial Bus Implementers Forum home page
This site hosts the USB Implementers Forum and provides links to information on group events, technical documents, white papers, FAQs, and links to press releases and articles regarding USB.

USB Central
Code samples, tools, information, and links for developers of USB peripherals and the applications that communicate with them. Includes Visual-Basic application code for accessing HID-class devices and source code for the Cypress CY7C63000.

USB News
Offers news items, market reports, and product information.

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QVS: USB Networking - Manufactures cables and connectivity products for the computer and communication industries. USB products include adaptors, cables, and repeaters.

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Cables To Go: Universal Serial Bus Cables - Big USB selection: AA extension, AB and mini-B up to 5 meters. Plus extender booster up to 150 feet. Same day shipping if ordered by 4pm.

related categories



related terms




cache coherence

Device Bay

Hi-Speed USB

hot plugging

IEEE 1394


parallel port


serial port

USB 2.0

USB flash drive


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