I opened pandora's box by changing the intel with the qualcomm. After taking the M.2 of the NAS (...had to disassemble the whole sh** to get it), I couldn't shut down the NAS anymore. It came up straight after the shut-down due to the WOL bios setting. taking out the card did lead to this strange behaviour. Anyway, both cards behave identical and I guess it relates to the 8bitdos. I will open a dedicated thread.
Thank you for your support