i cant connect my Samsung HMD Odyssey to my GTX 970, how do i fix?

[codyspring]

I recently have gotten a windows mixed reality HMD from Samsung which has a HDMI cable for its display. I do not however have an HDMI (female) on my GTX 970 ( it does have 2.0 but its too small), I have tried an adapter for miniDP, but it just makes the screen inside the HMD black. HDMI works with my motherboard, but it is very slow. what can i do?

 

[popatim]

Which 970 do you have?
You may have an HDMI/DP combo port on it.