ITEM NAME:5X USB 3.0 20-Pin Male To USB 2.0 9-Pin Motherboard Header Female Adapter GRU.USB 3.0 20Pin female: to connect your motherboard. Enable your USB 2.0 devices connect to the USB 3.0 20pin motherboard. USB 2.0 9Pin male: to connect your USB 2.0 devices. 5 Adapter Cables. Cable Length: 15cm.