i have a fractle case and it has a front panel usb 3.0 plug, which is the blue wide looking plug that is supposed to plug into a usb 3.0 header on some motherboards that have them. the motherboards i have been looking at do not have the usb 3.0 header on the motherboard. is there an adapter that will allow me to hook up the cases usb 3.0 cable to a usb 2.0 header on the motherboard? been looking and cant find what im looking for