Dual Port USB 3.0 to Motherboard Mainboard Internal 20pin /19pin Header Adapter ,20-pins to 2 X USB A Female Connector - Newegg.com
50cm Dual Port USB 3.0 to Motherboard Mainboard 20pin Header Adapter Cable w/ Rear PCI Bracket Panel,20 pins to 2 X USB A Female|adapter cable|usb 3.0usb to usb 3.0 - AliExpress
USB 3.0 Internal Connector Cable Specification
Amazon.com: CablesOnline 4" USB 3.0 20-Pin Motherboard Header Female to USB 2.0 8-Pin Male Adapter (USB3-AD24) : Electronics
SilverStone Sugo SG10: how to connect front USB connectors to motherboard? - Super User
Solved: Kaili2 Motherboard USB 3.0 pinout - HP Support Community - 6809577