Ok thanks. I do have the driver pack already but don't know if I can check from the files if they would work on Win8.
I checked some of the files (e.g. .xml), some do refer to Win8 (or even Vista), but some only mention Win10, so I expect that using this driver pack, I wouldn't get all devices covered in Win8.
I was hoping someone would have tried and found out if Win8 was natively supporting the NGC-1 devices. If no-one tried, there's only 1 way to know! I could always re-install Win10 if it doesn't work.