The official specifications for USB 3.0 will most probably become official in the next couple of days but one of the most important benefits with an upgrade is the increased bandwidth and transfer speed. Here’s a quick comparison of how long it would take to transfer 25GB with the different USB standards.
USB 1.1: 9.3 hours
USB 2.0: 13.9 minutes
USB 3.0: 70 seconds
25GB in 70 seconds with USB 3.0 [thefutureofthings.com]
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