If I understand correctly, you are not seeing any USB 3.0 devices at all in Device Manager. That’s odd, especially given this is your 2nd USB 3.0 card. You should at least see an entry with the little yellow “unknown device” symbol.
I didn’t even have to install drivers for my USB 3.0 card (unbranded one purchased from DealExtreme). Windows detected the new hardware, downloaded, and installed drivers automagically.
Please post more specific info on your USB 3.0 card. It might help to know what you’re working with.
