Solved: Kaili2 Motherboard USB 3.0 pinout - HP Support Community - 6809577
Amazon.com: Duttek USB 3.0 Header to USB 2.0,USB 3.0 to USB 2.0 Motherboard Adapter Cable,19 Pin USB3.0 Male to 9 Pin USB2.0 Female Motherboard Cable Adapter Converter 6 inch/15cm (2-Pack) : Electronics