Differences Between USB 3.0 and USB 2.0

Last Reviewed: 24-Feb-2017
Article ID: 000006350

The key differences between USB 3.0 and USB 2.0 are:

  • USB 3.0 has 5 Gb/s full-duplex point to point transfer speed compared to 480Mb/s half-duplex broadcast for USB 2.0. This is nearly ten times the performance increase of USB 2.0.
  • USB 3.0 increased power savings by optimizing power efficiency through no device polling and lower active and idle power.
Note USB 3.0 is backward compatible with USB 2.0