I'm putting together a new PC and am using z370 pro4 mobo. I am trying to install Windows 7 but my keyboard and mouse does not register when i get to the OS install screen. Apparently this mobo only has USB 3.0 ports, but windows 7 does not have default drivers for USB3.0. My only options now seem to be either go with windows 10 or buy an old keyboard/mouse with ps/2 connection. Anyone know if theres another way around this?