That looks to be a generic 100 series support list. The specs on the motherboard suggest it is a different type of m.2 which is why I am waiting until pics of the back of the board are available.
This document is linked in Support & Downloads section of Z170N-WIFI official product page.
I found a photos of this board including back on bit-tech: http://forums.bit-tech.net/showthread.php?t=286823
Back photo: http://lab501.ro/wp-content/uploads/2015/06/MG_4586-580x473.jpg