External hub not working

I had to disconnect the external hub from the ZS pro sound card on my XP system and on reconnecting I now find that the lights on the hub dont show. It does not do anything,control the volume or work the headphones. The pro gamer G500 speakers can be controlled from the wired controller and the headphones work from it but the on screen display does not show. I have double checked the connection.Has any one got ant ideas please

I have the same problem. Using a powered USB hub to connect my LaCie disk makes no difference versus a direct USB connection to TC.
Overall, I think I have other problems with TC, as I can access it via Time Machine, but not via Finder. I can see it in Finder, but any attempt to connect this way results in a "Connection Failed" message

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