I am working on a new mac mini 8,1 symbios for my daughter with Gig H310n mobo, Sapphire 560, i3-8100, BCM m2.wifi card. I attempted to create a USB kext. There are two USB 3.1 ports and two USB 2 ports on the back of the mobo. The internal connection for the front panel is two USB 3.1 ports...