- USB 3.0 Uses Tinned Copper Stranded 28 AWG Cables. - USB 3.0 Cables Contain Twice As Many Wires As USB 2.x To Support SuperSpeed Data Transmission & Are Thus Larger In Diameter. - Power Up To 3.6 W May Be Used. - Full-Duplex Communications. - USB 3.0 Standard Does Not Directly Specify A Maximum Cable Length - Requires only that all cables meet an electrical specification for copper cabling with AWG 26 wires. - Available in Lengths - 3, 6, 10 & 15ft.