So i just managed to make my old Rampage IV Extreme detect and work with M.2.
The way i did it was to follow this guide and mod my bios ([Guide] How to get full NVMe support for all Systems with an AMI UEFI BIOS) I got everything working, could even boot and install Win10 on it.
The problem is that the bios and OS detect the drive as a Samsung SSD 960 EVO 250GB (picture 1) even though i have a Samsung SSD 960 PRO 1TB (picture 2).

Notes:
I'm not able to test the drive on another machine since i don't have any other with m.2.
I have tested the adapter on every available PCI express slot, all with the same result.
Only the graphic card is connected, removed all other PCI devices.
Didn't make a firmware upgrade on the SSD and not planning to, afraid it might break the device if it is a detection problem.

Might it be a recognition problem from the system or have I been scammed?


What I'm using:
Rampage IV Extreme
i7-3970X
Asus Hyper m.2 x4 Mini
Gtx-1080Ti

Picture 1

Can close this topic, made a further research and this is happening a lot on amazon. Probably someone returned the wrong item and they sold it to me.. The sticker is the 960 PRO 1TB model but the product is an 960 EVO 250GB. Will try to return it now but my return window closed on Nov 4, 2017. (still curse myself to wait this long to try to install it..)

Hello

I'm looking for anyone who has done this with the NVME 960 evo m2 with the Gaming M5 MB.

EDIT by Fernando: Added link removed, because it is not topic related

Better to get a PCIe to M.2 converter/adapter.