USB 2.0 9Pin Motherboard Female to USB 3.0 20Pin Housing Male Adapter Cable for laptop PC Notebook Brand 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: 16cm - 6.30inch.