Work? Found a great deal on one.
Yes it works, but I'm only running 3 cards in it (the first thing I did was flash the bios).
It's practically the similar MoBo as MSI Z170Pro but instead of additional PCI-e slot it has two PCI slots. Pro version supports up to 7 GPUs (with using of M.2 slot) So MATE version should buy if it's really very cheap