Q: SM951 ssd blade for Mac Pro 5.1 -  AHCI or NVME

Hi,

I have recently upgraded my old 3.1 to newer 5.1. I have also bought a lycom m2 til pciE card and a Samsung SM951 ssd. HOWEVER I am not able to see the ssd in either disk utility or finder .I have bought the NVME version. I am thinking that maybe I should have ordered the AHCI version.

This will be my primary drive. It must be bootable.

Thanks in advance.