- Apr 18, 2011
- ASUS Pro WS X299 Sage II
- Mobile Phone
Oh yes, the newer BIOS (with Resizeable BAR Support) will kill USB on Thunderbolt. So number one action item would be to downgrade the BIOS.
Surprisingly if you have a newer BIOS and jump pins 1 and 3 with Thunderbolt settings enabled in the BIOS, the USB ports still work. If you plug in the normal 5 pin header or disable Thunderbolt settings with jumped pins, the XHC controller is gone. Not sure if this is just an ASUS X299 thing or not though