In case you never got an answer to this.....the Z170i pro gaming can take 3 sizes of m.2.....the 2280, 2260 and there is a little bracket to allow it to accept the smaller sized 2242 drives.
I meen the length yes, i've seen some named 2260 and 2280 or something like that. I just need a cheap one that have at least 240-250gb for windows. Do you have one to recommend for it?
In case you never got an answer to this.....the Z170i pro gaming can take 3 sizes of m.2.....the 2280, 2260 and there is a little bracket to allow it to accept the smaller sized 2242 drives.