Thank you mi-hol,
Unfortunately that’s not the case as the same card on the same server with a live iso works just fine, as well as the same card on another server. I have tested it in the MicroServer as well as the DL360, it works fine on both. On the DL380 I see this behaviour.
The firmware is up to date as I made sure I it was updated through the latest HP SPP and verified on the HPE website that I was running the latest.
I might try to put a NC365T or a 331T, the latest has a Broadcom chip as opposed to the former which is an Intel one.
Any other idea?