I am not showing that drive listed for the R620. From what I am seeing there only appears to be 3 listed drives, a 400gb (part NYF0Y), 800GB (part 0PHJ5) and a 1.6TB (part 4WNJN) nvme drives.   That being said I can't say that drive definetly won't work, but it isn't tested or supported, so I can't attest to how it will react.  
Is it possible to plug 4.0 gen pcie disc to 3.0 ? Because it should work but it doesn't show plugged disc in system.
Question about Dell poweredge r620 server