Hello all, 

So I am running a Dell Poweredge R430 in it I added a NIC: BRCM 10Gb BASET 2P 57406 Adptr with two slots.

First I had an installation of hyper-v server 2016 which recognized both slots of this NIC without any problems. I decided to upgrade to Windows Server 2019 and since that moment 1 of the slots is up and the other doesn't show a MAC adress anymore:

Name                      InterfaceDescription                    ifIndex Status       MacAddress             LinkSpeed
----                      --------------------                    ------- ------       ----------             ---------
SLOT 1 Port 1             Broadcom NetXtreme E-Series Dual-por...       3 Up           00-0A-F7-A5-AE-A6         1 Gbps
SLOT 1 Port 2             Broadcom NetXtreme E-Series Dual-p...#2      11 Not Present                            0 bps

I've tried to upgrade the drivers and firmware to the following versions.

And in the ILO it says strangely enough that the OS status is operational:

(on the old firmware/drivers it was not operational)

TLDR: New NIC, 1 port is working, the other is not. According to the DCA administrator both lights are blinking so it should be ok.

Anybody any ideas what else I can do or what can be wrong?

Thanks in advance