Serial Physical Connections
PHY Layer Connections
PHY Layer Connections
USB Interface, 3.0
Universal Interface Bus, revision 3.0

Revision 3.0 of the USB specification adds a new connector. The new connector for 3.0 [Superspeed] adds pins for version 3.0 and retains separate pins for version 2.0 making the connector just a tad longer. Revisions 1.0 and 2.0 of the USB specification use the same standard, version 2.0 may have added a few new styles