Intel(R) Xeon(R) Silver 4110  has PCIe Revision 3.0.  
Is it possible to run a m.2 SamSung 980 PRO 4.0 SSD Nvme in the flexbay and get GEN4 speeds? It looks like the m.2 SAS module is only GEN3. If there is a GEN 4 version can someone point me to it. Thanks
DELL 7820 m.2 nvme pcie GEN4 in flexbay possible?