Username wrote:Hi there
You should not need to disable SIP.
What do the System information show regarding the TB3 ports and US4KE? Can you post a screenshot?
After that you should:
Run the uninstaller for Desktop Video. Reboot
Run the Installer for Desktop Video.
Launch DV.
I don't have the device handy right now, so I can't post a screenshot, but it basically shows up under Thunderbolt/USB4 and says Blackmagic Ultrastudio Extreme 4K, totally fine. Never in Desktop Video Setup though. I have tried all the things you suggest, including multiple versions of Desktop Video installer just to see if there's a weird bug with one of them. Nothing works, and only for that device. Every other device (Ultrastudio 4K TB2, Ultrastudio 4K Mini) works just fine on every iteration. I have a belief that this Ultrastudio 4K Extreme is not working correctly, but strange that it does show up under System Profiler and the internal fan is blowing when I connect it.