USB 3.0 plenty speedy, sometimes quite slick
If you’re looking for an external hard drive with faster data transfer speeds, you’ve probably considered models that use the USB 3.0 standard. The latest USB spec touts a theoretical maximum data transfer rate of 5 gigabits a second, compared with a maximum rate of 480 megabits a second for USB 2.0 drives. Most makers of hard drives put it more simply: USB 3.0 drives should be 10 times faster than USB 2.0 models.
Chances are, you haven’t had a chance to see for yourself. Makers of hard drives started shipping USB 3.0 drives this year, but most computers don’t have the USB 3.0 ports needed for the new technology. However, there are work-arounds involving adapter cards.