ASUS XG-C100F driver in kernel for Proxmox 5.4-15 ?

That driver is included since kernel 4.11 AFAICT. Not sure if it was enabled, might want to take a look at the Ubuntu kernel default config from back then.

I can confirm that the newest version of PVE (w/ kernel 5.4.65-1 at the time of writing) supports AQC107 cards.
 
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