The only thing related to USB on the mobo driver page was something to do with Thunderbolt https://www.gigabyte.com/Motherboard/GA-Z170MX-Gaming-5-rev-10/support#support-dl-driver-usb31
I installed that and then swapped back to the included cable and we were in business.
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The only thing related to USB on the mobo driver page was something to do with Thunderbolt
https://www.gigabyte.com/Motherboard/GA-Z170MX-Gaming-5-rev-10/support#support-dl-driver-usb31
I installed that and then swapped back to the included cable and we were in business.