Features: Environmentally friendly wires and connectors, with excellent electrical conductivity and high-speed data transmission. Data conductor twisted pair (impedance matching): Minimize data line signal crosstalk! Provides ultra-fast data transfer rates of up to 5Gbp/s. Elastic PVC jacket: flexible and not easy to break, durable. Overmolded, not easy to break, durable, ensuring error-free data transmission. Endshield: Helps reduce signal interference and is 100% compatible with current USB specifications. Braided copper mesh and aluminum-platinum double-layer shielding: can greatly reduce electromagnetic interference and radio interference. Specification: Product color: Black Product interface: One 19pin/20pin female, the other double USB3.0 A-female with fixed feet Line length: approx. 0.6m/1.97ft Package list: 1 * USB3.0 Data Cable Note: This product is just a data cable. It must be used with a USB3.0 expansion card or a USB+USB3.0 device (hard disk box or USB flash drive) with USB3.0 interface to run out of USB3.0. If plugged into the USB2.0 interface can only run to the speed of USB2.0, this is a common sense problem, please know! USB3.0 is a double-row total of 20PIN, one of which has been pulled out of the needle, so it is also called 19PIN.