Dominator DDR4 3466Mhz key doesn't fit Gigabyte Z170X-Gaming G1 board.

[Sokubakuza]

I don't get it?
Mem: Corsair Dominator Platinum DDR4 3466Mhz
CMD64GX4M4B3466C16
MB: Gigabyte GA-Z170X-Gaming G1 ver.1.0
What am I missing?

 

[popatim]

Maybe you need to spin them around?
Can you post a pics?