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30-07-12, 05:00 PM
Join Date: Sep 2010
Location: Hove, actually
USB stands for Universal Serial Bus - but you don't need to know that. It was a means of standardising the various ways that external devices were connected to computers - there used to be several diiferent (incompatible) methods.
The first version was servicable for slow devices like mice and keyboards, but inadequate for anything where faster transfers were needed - like disk drives. As an illustration, when my computer only ran USB1 and my wife's had USB2 support, file transfers were far, far faster if I connected the USB disk to her computer, shared it over the network and copied files that way.
Version 2, as stated, was 40 times faster, and disks were usuable.
Version 3 is faster still.
Naturally, later versions require hardware and driver support; version 3 even comes with a different connector.
Last edited by StephenBatey; 30-07-12 at
. Reason: Typo
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