Thanks a lot @zipb, what do you suggest to make Thunderbolt work best on this board? I don't get what you mean by saying "TB works best (after waking it up in Windows) ..." Currently Thunderbolt devices are seen in MacOS if they're switched on at boot. Should those devices work flawlessly once they're seen? Like external thunderbolt discs for example? Because while copying from external Thunderbolt discs the system hung up and required a reboot. But USB hung up too. Thanks for your help.