Thank you for your and your colleagues replies. We have tried supported versions RHEL and SLES without success. The embedded card is a X520, to verify that this was not a driver problem we have purchased off the shelve Intel X520's and plugged them into the PCI-e slot. They worked on the first attempt, concluding that either the integrated X520 is unable to work with regular X520 drivers (ixgbe), or that the integrated X520 is indeed not properly presented to the OS. Both would by unfortunate, regardless we will just stick in more X520's for now. 
HI there, We have been struggling for a while. But we are unable to see the integrated NIC's of the C6320 servers in the OS.What we have checked:- Interface shows up in iDRAC under Network devices- Cisco/Intel/Dell SFP+'s (all work when we assign the iDRAC to them)- The switch shows the link as UP and 10GBIT- iDRAC and Lifecycle controller show link up- 'racadm get NIC' yields no results- System inventory shows 'Embedded NIC 1 Port 1 Partition 1' with NicMode=Disabled. What we have tried:- Update BIOS, Lifecycle, OS tools, etc to the latest version and even older versions just to try- Reset all ('retire/repurpose')- Install Ubuntu 18, 20, 22. Cent/Rocky, ESXi. - Nor LSHW/LSPCI have any references to any NIC's- We have tried toggling it in the BIOS and rebooting with powercycle (pull plug) Would anyone have any clue what we can try to use this NIC?
C6320 NIC not showing in OS