Drivers Placa Mae G31mxp-k I7
Download the latest version of Foxconn G31MXP drivers according to your computer's operating system.
Ig31m Motherboard Driver
That mean win 10 allready installed the latest chipset, as i told you before nothing will help the USB issue as intel provides the drivers for win 10 and microsoft builds that driver into the windows build, i have the same issue with usb 3 only MS can issue a fix for it and i have told them about it but they have done nothing about it yet. So we will just have to live with the issue untell its fixed by ms in partner with intel. You will not find a driver for usb 3 for win 10 anywhere.
Unless intel decides to release one which i doubt they will. I don't no were you got that they do not support it see here they support it fully let me tell you a device can claim usb 3.0 and only be slightly faster then what it was, i bet its the devices we are using not windows 10 at all. They would not put it on there official list if it was nto supported.