USB makes adding peripheral devices so easy, anyone can do it.

First, USB replaces all the different kinds of serial and parallel port connectors with one standardized plug and port combination. It looks like this:

With USB-compliant PCs and peripherals, you just plug them in and turn them on! USB makes the whole process automatic. It's like adding instant new capabilities to your PC. You never need to open your PC, and you don't need to worry about add-in cards, DIP switch settings or IRQs.

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