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USB

USB

Universal Serial Bus. USB provides a single common interface to peripherals and plug-and-play configuration (at the host/pc).

The original standard for USB (occasionally referred to as USB 1.0, but normally simply as USB) supported transfer speeds of 1.5Mbps and 12Mbps. USB 1.1 is a revised version of the USB specification, but the transfer rate remains unchanged. USB 2.0 (also referred to as "USB Hi-Speed) also supports 480Mbps and is otherwise backwards compatible with earlier versions. The USB specification limits maximum cable lengths to 5m for high speed USB devices and 3m to low speed devices USB.

USB Version	Supported speeds			Maximum cable length
USB Version	1.5Mbps	12Mbps	480Mbps	Maximum cable length
USB 2.0				5m
USB 1.1				3m
USB 1.0				3m

Relevant links:

www.usb.org
www.usb.org/faq - USB FAQ.
www.everythingusb.com
www.uwe-sieber.de/usbtrouble_e.html - Windows Troubleshooting for USB drives.
www.microsoft.com/whdc/device/stream/vidcap/UVCViewdwn.mspx - Download site for UVCView a diagnostic tool from Microsoft which allows information from devices to be viewed. If you cannot identify a suitable driver for a device then this might help to identify the device.
http://pinouts.ru/Slots/USB_pinout.shtml - USB pin-outs, and diagrams of the different types of USB connectors.

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