Motherboard 20pin Turn Double USB3.0 Extension Cable with Ear Baffle Cable 1. Conductor: positive standard 24,28 copper OD5.5 2. Wire standard: AWM 20276 3. Outer cover material: environmental protection PVC 4. Screw model: M3 (Distribution M3x8mm screws) 5. Single weight: 67g (including 2 M3 screws) 6. Transmission speed: 5Gbps standard, actual measurement can reach 500MB-600MBS (test equipment is USB3.0 hard disk) 7. Interface: one double-layer dual-port standard USB3.0 A female connector, the other 19PIN female connector 8. Wire characteristics: -Environmentally friendly wires, connectors, with excellent electrical conductivity, high-speed data transmission -Twisted pair of data wires (impedance matching): Minimize crosstalk of data line signals! -Elastic PVC jacket: flexible and not easy to break, durable -Overmolding, not easy to break, durable and ensure error-free data transmission -Inner film shielding: help reduce signal interference and ensure compatibility with current USB specifications -Braided copper mesh and aluminum-platinum double-layer shielding: can greatly reduce electromagnetic interference and radio interference 9. Matters needing attention: This product is only a data cable. It can only run out of USB3.0 speed with USB3.0 device (hard disk box or U disk) with USB3.0 expansion card or computer with USB3.0 interface. If you use a USB2.0 device, you can only run to USB2.0 speed, and it will not speed up.