Officially, ‘USB 3.1 Gen 1’ and ‘USB 3.0’ are equivalent and can be used interchangeably. The part of the USB 3.1 specification that permits 10 Gbps data transport is known as USB 3.1 Gen 2. When specifically referring to speed, the USB-IF has indicated that people should use ‘SuperSpeed USB’ and ‘SuperSpeed USB 10 Gbps’.