U Definitions
	|Symbols|0-9| |A|B|C|D|E|F|G|H|I|J|K|L|M|N|O|P|Q|R|S|T|U|V|W|X|Y|Z| USB: n. "yu-ess-bee": An external bus standard that supports data transfer rates of 12 Mbps (12 million bits per second). One USB port can connect up to 127 peripheral devices, such as keyboards, modems, and mice. USB also supports hot plugging and Plug-and-Play installation.