Green-state 19 Pin USB 3.0 Female To 9 Pin USB 2.0 Male Motherboard Cable Adapter Pack of 5 USB3.0 19 Pin female: to connect your motherboard USB2.0 9 Pin male: to connect your USB 2.0 devices Enable your USB 2.0 device connected the USB 3.0 19 Pin motherboard. Data speed: 480Mbps for USB 2.0 device Length: 15cm