Did you get my email? can you provide a: dmesg # lspci -t -v # lspci -vv
Thanks
Most quad adapters use PCI-e bifurcation not a PCI-e switch and AFAIK not many boards support bifurcation so you would need a switched model which you might have (I am not sure) if you do have a switched card I would also contact the OEM as there shouldn't be any reason as to why it doesn't work.
Not having PCI-e 3.0 wouldn't make a difference at all in terms of the card working with all 4 cards and if the cards uplink is PCI-e 2.0 x8 or x16 you won't notice a difference in speed.
VROC is an optional wintel gimmick addon that shouldn't be required for it to work - if you could link a .pdf manual I will find out if it is switched or bifurcated.