you see Super Speed USB Hub (Non Functional) in the device manager with ASMedia USB 3.0 Controller (e.g. on M5A78L/USB3 motherboard) on Windows 8?
(You can see in detail what this means at the Microsoft Windows USB Core Team Blog, here).
Here is what to do:
try disabling the onboard USB 3 controller in the BIOS first and see whether the Non Functional SuperSpeed problem still appears. Well , it didn’t. So it was a driver issue between the PCI-e USB 3.0 controller card and the on-board USB 3.0 controller.
Of course the ASUS M5A78L/USB3 is not certified for Windows 8 and contacting ASUS before they denied any support or putting new Windows 8 drivers on the download page because of it.
But thanks to Google I found out that there are new ASMedia USB 3.0 Win8x64 drivers supplied by asus on their Notebook drivers download page: http://support.asus.com/Download.aspx?SLanguage=en&m=USB3.0&p=3&os=30
And voilla it worked!
This solution was actually supplied with big help of redyear20! Thanks! 🙂