USB 3.0 SuperSpeed
USB 3.0 (SuperSpeed USB) devices have a maximum communications speed of up to 5 Gbit/s (~572 MB/s) per controller, shared amongst attached devices.
USB 3.0 devices will require USB3.0 cables to work at 3.0 speeds.
NOTICE: USB 3.0 SuperSpeed stardard-B plugs will not fit in legacy (USB 2.0) Standard-B ports.
To accommodate the additional pins for SuperSpeed mode, the physical form factors for USB 3.0 plugs and receptacles have been modified. Standard-A plugs have been extended in length (accordingly the port is deeper) with the SuperSpeed pins extending beyond the legacy pins. SuperSpeed Standard-B plugs have the SuperSpeed pins placed on top of the existing form factor.
Source: Wikipedia.






