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

This article applies to: