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First of all, please note this is a compatibility issue related to the OS which we do not provide support to, the best place to go is the OS developers.
With that said, I did my research about the issue and found this link: http://www.v-front.de/2013/11/how-to-make-your-unsupported-sata-ahci.html
It indicates that you could install AHCI drivers which can help with your issue.
NOTE: This link is being offered for your convenience and should not be viewed as an endorsement by Intel of the content, products, or services offered there.
I hope this can be of help and you can get the Intel® NUC Kit NUC6i5SYH as desired!