Using multi-layer circuit boards to connect USB3.0 high-speed signal lossless transmission.USB3.0 high speed signal lossless transmission .Solve the problem that 19p cable directly inserted in the motherboard is not small enough to the motherboard pin.The of the motherboard 19P interface the inside of the motherboard, A.Type: computer motherboard adapterInterface: USB3.0Colour:blackMaterial:plasticPackage Contents:2 x AdapterOnly the above package content, other products are not included.Note: Light reflection different displays may cse the col of the item in the picture a little different from the real thing. The measurement allowed err is 1-3cm. Our products are made with the highest quality materials are designed to provide you with the best possible user experience. We strive to ship out all ders within three days of purchase, the estimated delivery time is 8-15 days. When shopping, please pay attention to the size dimensions of the product to ensure that it meets your needs. In the title , we have provided detailed infmation about the product, including its features specifications We want you to be completely satisfied with your purchase, so if you have any questions concerns, please don''''''''t hesitate to contact us. We are here to help will do our best to assist you. Thank you f choosing our product. We hope you enjoy it