This USB 3.0 SuperSpeed Adapter converts USB 3.0 19-pin (usually connected to the motherboard) to 2 female USB 3.0 ports. This adapter will provide a single USB 3.0 female connection. Dual USB-A ports are connected to the front panel of the computer, and the other 19-pin IDC connector is connected to the computer motherboard USB3.0 transmission specification, providing up to 5 Gbps data transfer rate, no need for drivers, plug and play, backward compatible with USB2.0, USB1.1 specification. USB3.0 female seat with crepe positioning hole, convenient USB3.0 port is fixed on the chassis panel or host rear panel, cable length 50CM This 20-pin design feeds directly to your motherboard, eliminating the need to take advantage of valuable PCI-E or PCI slots.