USB 3.0 20 Pin Housing Male To USB2.0 9 Pin Female Motherboard Header Adapter Cable 15CM Extension Converter Cable for Desktop PC Features: This adapter allows you to connect USB 3.0 Housing with USB 2.0 motherboard. Capable of 480mbps data speeds, you'll never struggle from slow USB ports again! Brand new and high quality. Connector: USB 2.0 9Pin Motherboard Female to USB 3.0 20Pin Housing Male. Let your USB 3.0 20pin device connected the USB 2.0 motherboard. Data speed: 480Mbps for USB 3.0 device. Length: About 15cm