Answer

To use Thunderbolt add-on card, please enable BIOS\Settings\Advanced\Intel(R) Thunderbolt\Discrete Thunderbolt (TM) Support [Enabled], Save & Exit, and then enable BIOS\Settings\Advanced\Intel(R) Thunderbolt\Discrete Thunderbolt(TM) Configuration\Thunderbolt OS Support\Windows 10 Thunderbolt Support [Enabled].

Models

MPG Z390 GAMING PRO CARBON, MPG Z390 GAMING PRO CARBON AC, Z390-A PRO, MAG Z390M MORTAR, MPG Z390 GAMING EDGE AC