I bought the NUC8i7HVK recently and plugged in an eGPU. For some reason, when I shut down the NUC, the eGPU is still powered on and I can see the RGB lights.
I use the same eGPU with a laptop that also has TB3 and when I shut off the laptop, the eGPU turns off like it should.
I'm not sure why for the NUC, it is not turning off. I have the latest drivers for everything. The eGPU encloser is the Razer Core X.
Right now, the only thing I can do is just unplug the eGPU and plug back in every single day; which is annoying.
1. Are you running the Thunderbolt* 3 DCH Driver for Windows® 10 for Intel® NUC Products version: 1.41.645.0?
This is what I have and the driver version is the same as what you recommended.
2. Have you tried using another Thunderbolt* 3 cable for testing purposes?
Yes, using 2 TB3 Active cables from Razer.
3. Please run the Intel® System Support Utility and attach the report to this thread.
But a lot of eGPU enclosers have their own power supply to power up the card.
One thing I did notice is that when I completely cut off power to the NUC (unplug power cord / turn off power strip), eGPU turns off. Is it because even when you shut down windows, the NUC itself is still providing power via its TB3 that the eGPU is sensing the PC isn't shutdown (like a USB hub)? Is it possible to completely turn off power delivery for the TB3 when you shutdown?