The CNVi connector is located in a way that it would (almost) be impossible to mount the NVMe SSD there:
@Seraph1m @Lost_N_BIOS @Paulos7 @XGen @lfb6
Since Seraph1m’s problem has nothing to with >this< thread, where he/she had posted it, I have moved the complete discussion into a separate thread.
@lfb6
@Fernando
So the fact of the matter is, the computer I initially did not see in any of the three ports of M.2. I would not be so perverted over my computer if it all worked.
I tried it, but it didn’t show anything. Therefore I came to this forum for help.
So as not to insert M.2 correctly, you need to have curved arms
Fernando, Right now I will try what you wrote.
1.) You wouldn’t be the first one
2.) It happened to me, too. Moved my NVMe SSD from motherboards M.2 slot (connected to H97 chipset Gen 2 x 2) to PCIe slot with adapter card (connected directly to processor Gen 3 x 4) and had to re-seat it in the connector… 
(My NVMe SSD worked connected to H97 chipset with RST 16.8.2.1002 driver, but not when installed via adapter card- had to use Windows10 native driver?)
It just so happened that I have crooked hands and did not have the strength to insert the SSD to the end))
As soon as I inserted, my system immediately saw it.
I apologize to all for my stupidity and time spent on me)
@Seraph1m :
Thanks for your feedback!
It is fine, that you finally got the NVMe SSD working with your system.