Type: USB3.0 extension cable (USB3.0 high-speed data line extended) backward compatible with USB2.0 Connector: gold-plated head to ensure the speed and stability of the high-speed signal interference Wire: high-purity oxygen-free copper standard USB3.0 connector provides excellent electrical conductivity, making high-speed transmission of data fast and accurate, up to 5Gbps speed, compatible USB 2.0 (480Mbps) and USB 1.1 (12Mbps) Specification O D: 5.5mm Purpose: to extend the computer's USB port come out to accept other USB devices such as USB keyboard, mouse, U disk, card reader, Bluetooth adapters, scanners, etc. Advantages: ● Protected jack (external electronic equipment without direct swap back and forth on the host computer, so that the protection of the interface USB devices, but also convenient to use) ● quality environmental OFC copper wire core, stable, high transmission speed ● double layer of aluminum foil + foil double shielding, anti-interference ability, transmission and stability ● data wire twisted-pair (impedance matching), effectively reducing the data line signals cross harassed ● USB3.0 transmission specifications and provides data transfer rates up to 5Gbps ● Flexible PVC jacket: flexible smooth, resistant to bending / aging / wear and durability ● Full Week protection-type connector, better protection of joints Convenience: lossless signal, plug and play