I’ve tried two Cardbus Express cards now with similar results on both.
Have the Renasis latest drivers installed
WIth Device Manager open I see that when I insert the USB3 Express card Windows 7 recognizes it.
I plug in the little power USB power cable that came with it and all still looks fine.
Then I plug in my Passport to it and the 2 USB 3 entries (Host Controller and Root Hub) both disappear.
Actually I just noticed that they appear and disappear after I unplug the Passport as well, so I guess I’ll look for a Renasis forum to find out if that is a common problem and if fixes exist. I read here previously that many people were experienceing similar problems on both desktops and laptops even with factory installed USB3 so if anyone does have a solution and could post it that would be great.