13:00.0 Ethernet controller [0200]: Broadcom Limited NetXtreme II BCM57810 10 Gigabit Ethernet [14e4:168e] (rev 10)
Subsystem: Hewlett-Packard Company Ethernet 10Gb 2-port 530SFP+ Adapter [103c:339d]
Kernel driver in use: bnx2x
Kernel modules: bnx2x
I have this card on a Dell R720 with Proxmox-ve 6.3-1 (kernel 5.4.106-1-pve) and it does NOT work. PVE-firmware 3.2-2. Card shows activity on my switch prior to Proxmox loading, then shuts down once the kernel loads. Card firmware is updated.Broadcom NICs often require the binary firmware blob to be loaded by the OS to work. This is likely already covered by the package 'pve-firmware' and is usually already installed if you have used the installer ISO.
I can spot bnx2x firmware in pve-firmware, so at that point there is no need to install neither the Red Hat drivers, nor to install additional packages as suggested by @czechsys , the card should simply work.