Hello [NAME], It's good to see you back in the Dell Community. Happy new year for you. Regarding your question, I can see three different Network Cards searching for "X520" for a PowerEdge R720:   Dell Part Number - Functional Description942V6 - Network Card, PCIe, Intel(R) Ethernet 10G 2P X520 Adapter, Low Profile, (Version 2)C63DV - Network Card, PCIe, Intel(R) Ethernet 10G 4P X520/I350 rNDCXYT17 - Network Card, PCIe, Intel(R) Ethernet 10G 2P X520 Adapter, (Version 2) Hope this helps. Please, don't hesitate to ask any other question. Regards.
Could someone please tell me what the correct FRU is for the Intel X520-DA2 that is suited to the R720, R320 @ T620 servers. I have the following installed in a R320 and it is not recognized by the iDARC and I can not update the firmware through the life cycle controller, OMSA, bootable ISO or manually via CentOS 7. Thanks
Correct X520-DA2 FRU for Gen 12 servers