Hi beaker7, I have the same motherboard Supermicro X11DPG-QT Rev 1.02 and an Asus Thunderbolt EX3 card. I tried all the pcie slots, installing the drivers multiple times. My system is Windows 10Pro.To update, I now have the Asus Thunderbolt EX3 card working on Supermicro X11DPG-QT with the latest bios.
X11DPG-QT | Motherboards | Products - Super Micro Computer, Inc.
I'm currently having bios v 2.01.
It doesn't work on my end. Can you please help me in understanding your bios settings and how you've installed yours?
Thanks!