meh, the wiring is all the same, the size is just different to fit into different devices
Any way the universal is referring to the fact that any kind of device can be plugged into a PC using USB (rather than having to use a parallel port for a printer and a serial port for a camera, and a PS/2 port for a mouse and keyboard and so on)
Now they all use a similar transmission standard and can be plugged into any USB port on the back of your PC. Part of the original idea was to have a whole bunch of USB ports on a PC and nothing else. you could plug anything in anywhere and it would work.
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I'm just sayin'
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