1) Cable Length: 50cm,with 80mm Low profile PCI-E bracket. 2) With this cable, you can directly connector motherboard 20pin socket, converted to chassis back panel dual USB 3.0 socket. 3) Applicable to USB 3.0 Type A devices, such as keyboard, mouse, USB flash drive, mobile hard disk, printer, HUB, SSD, camera devices. 4) Compliant with USB 3.0 Super-Speed (5Gbps), USB 2.0 Hi-Speed (480Mbps), USB 1.1 Low-Speed (1.5Mbps). 5) Convenient, designed for ease of use,Durable single-piece molded construction.Virtually indestructable.