1. Dual USB 3.0 A Type Female to Motherboard 20/19 Pin Box Header Slot Adapter PCBA Flat Type
  2. Flat type PC Board Assembly with usb 3.0 connector
  3. You can connect the 20pin header to the internal usb 3.0 motherboard,
  4. then connect the USB type A female to the external USB 3.0 device.