This internal header adapter cable connects motherboard native USB 2.0 9Pin female header to USB 3.0 20Pin male connector, allowing old motherboards to connect conventional USB 3.0 front panel modules smoothly. It runs under USB 2.0 protocol with maximum 480Mbps transfer speed for flash drives, mouse, keyboard and small charging devices. Made with durable insulated black casing and precision molded pins for reliable internal chassis use. Plug and play with no driver required, an economical solution for DIY PC renovation and case front port refitting projects.