Usage Tips:Features: For full-duplex data transmission, in USB3.1, in addition to the four main lines, two sets of cables are added (each set has a pair of signal lines and ground lines, and the periphery is shielded by aluminum foil, which does not interfere with each other), one The group is used to send data, and the group is used to receive data. That is to say, USB3.1 can perform read and write operations at full speed synchronously. Previous USB versions didn'for t support full-duplex data transmission. Double shielding (braided shielding + aluminum foil shielding) can greatly reduce electromagnetic interference and radio interference, and transmit data stably. Support USB 3.1 (10Gbps), for USB 2.0 (480Mbps) and USB 1.1 (12Mbps) specifications. Unique aluminum alloy for case with the reinforced connector withstand 10000+ plugging and unplugging tests. Stable and Durable,anti-Break, nylon braided cord. Specifications: Material:Nylon Length:Approx.50cm/19.69in,100cm/39.37in,150cm/59.06in,200cm/78.74in(optional) Net Weight:25-68g Package Includes: 1x USB C Extension Cable note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.