This 15cm adapter cable is the ideal solution for those who need to connect a front panel or USB 2.0 device to a modern motherboard with USB 3.0 (19-pin header). It allows to convert the internal connection, ensuring that the front doors of the case remain functional even in the absence of free USB 2.0 header on the motherboard. The cable features a 9-pin female USB 2.0 connector and a 19-pin male USB 3.0 connector. The flexible structure and the contained length facilitate a clean and neat installation within any case, eliminating unnecessary cables. Technical Note: Although connected to a USB 3.0 header, the data transfer speed will be that of the USB 2.0 standard, as it is limited by the end device or by the type of 9-pin connector wiring. Main technical specifications Connector A: Header USB 3.0 to 19-Pin Male. Connector B: Header USB 2.0 to 9-Pin Female. Cable length: about 15 cm. Construction: Flexible black cable with internal wiring protected by heat shrinking sheath on connectors. Installation: Completely Plug and Play.