I live in the EU so getting the EU apple dongle is more convenient, is it worth getting?

Is the EU version of the apple dongle good too? I live in the EU and importing from US is a bit too expensive

What improvements does the apple dongle dac give? Is it compatible with windows?

Yes this morning I reconnected them and now the front panel works. Obviously there's no change in sound.

I don't know if this is the case for you too, but apparently the Realtek Audio Manager has been replaced with the Audio Console (from the microsoft store). Kinda sucks I can't use the equaliser without enabling DTS, and there seems to be more options for a Realtek Digital Output (environment options, etc.) which my headphones apparently aren't (they're under the Speakers tab)

Sennheiser's graph is much smoother and neutral than the G433 (which has a bump in the mid range), which ig is a good thing. I think I'll just have to get used to the headphones lol

I tried connecting it to the front panel audio header of my case, but Windows itsn't detecting anything. I might be missing some drivers for the AAFP port. However in the motherboard's manual it says Line Out connects to headphones and speakers.