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Peripheral connector that allows items such as printers, scanners and digital cameras to be connected and unconnected to the computer without turning it off. The computer detects when an item has been plugged in and asks you to install the necessary software if it isn’t already on board. Up to 127 items can be connected at once.
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USB 2.0 works in the same way as the original USB standard, and even looks the same. However it uses a much higher bandwidth, up to 40 times faster than the original standard. USB 2.0 also has the advantage of being backwards compatible with existing USB technology, so all your old devices will still work from a USB 2.0-capable system.