1. You can use it to convert the USB 3.0 19/20 Pin header on the motherboard to 2 USB 3.0 Type A female ports.2. With dual USB 3.0 ports and a 19/20 Pin port3. The use of environmentally friendly materials, good electrical conductivity, strong anti-interference ability, to ensure the stability of high-speed data transmission.Specification:model:PH22C / PH21 / PH22Colour:blackMaterial:PCB+Plastic+MetalPackage Contents:1 * USB 3.0 Motherboard AdapterOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.