Thanks for joining the NUC community.
I understand you have installed CentOS and it does not shut computer down using power button.
Please bear in mind; Linux support for your NUC model is limited at Intel. We recommend trying any of the Linux support groups to see if there are any drivers available that will provide you with the functions you require. Login | Linux.com
I was checking on this matter and I found that it may help updating kernel-ml from ELRepo:
Thanks for answering my question.
I had mailed same question on CentOS ML.
I'll trying to install kernel-ml from ELRepo.