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: Main control chip: Two fixed screw holes 28mm, USB port exposed 10mm Product color: Blue Product interface: one 19pin/20pin female mother, the other double USB3.0 A female Support system: For WinXP/2003/VISTA/2008/Windows 7/WIN8 32/64BIT/Linux Line length: approx. 0.8m/2.62ft Package list: 1 * USB3.0 Data Cable 1 * Screw Kit Note: Please make sure that the screw holes in your chassis are two fixed screw holes 28mm at the time of purchase. Is this line suitable? 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.