Hello Deihmos, thanks for joining the Intel Community.
I was trying to find on the D34010WYK NUC this power setting you mentioned, but I couldn’t find them. I also looked on the TPS of the NUC and it does not say anything about C9/C10 C-State.
This is the only information available on pag32 that talks about power states.
Could you please send me a picture of these features?