Hi--
I did start this thread on the x399 prof, but I switched to the Asus Zenith Extreme partway (as above). My recollection from the x399 is that the aquantia did show up on the hardware list but I never did much with it, because I have no 10G switch nor anything else with a 10G port.
I'm only passing through whole controllers at this point. I'd like to have 1 controller for each of the 4 vm's with GPU's, and there are 4 usb controllers on the the Zenith. 2 of the 3 AMD controllers work; the AMD 3.1 controller won't allow boot when passed through and the ASMEDIA is stuck in perpetual "activated needs reboot": no matter how many times I reboot-- so I only have 2 useful passthrough controllers for 4 vm's. I'm using software to pass individual devices from one of the vm's to the other 2 but this is not idea.