Description? This adapter allows you to connect USB 3.0 motherboard with USB 2.0 ports. Capable of 480mbps data speeds, you'll never struggle from slow USB ports again! Features: Connector: USB3.0 20Pin female: to connect your motherboard USB2.0 9Pin male: to connect your USB 2.0 devices enable your USB 2.0 device connected the USB 3.0 20pin motherboard. Data speed: 480Mbps for USB 2.0 device Length: 15cm around Package? 10 X USB 3.0 20 Pin Female to USB 2.0 9 Pin Male Cable