atc800

Hi, I have an atc800 from gigabyte, the mobo is an msiz390 tomahawk and the problem is about the light system of the cooler. I don t know why but gigabyte had thinked that put an 9pin for the rgb conrol was a good thing, now I m searching how to put that 9 pin(usb) to a 3 pin for argb. I have an...