That Universal Serial Bus port in your computer is about to get an upgrade. You know, the one where you plug in all your external hard drives, digital cameras, MP3 players, thumb drives, and USB heated-slippers? If you bought your computer any time after the year 2000, it probably came equipped with a USB 2.0 port. However, later this year computers will start shipping that include USB 3.0 ports, which can transmit data up to ten times as fast. Here's what to expect.