Added PCI USB2 card, problems with recognizing USB2 harddrive

I added a Trust PCI USB 2.0 card (based on VIA chip) to my PC. The PC
already has a 2-port USB 1.1 on the mainboard.
When I connect my new USB2 harddrive (Freecom Classic) it only works in
FullSpeed, not HiSpeed.
In the Device Manager it is "connected" to a "standard" USB Root Hub.
In the device manager I see 4 VIA Universal PCI to USB Host Controllers each
with their own USB Root Hub under it.
Also there is a Standard Enhanced PCI to USB Host Controller with a USB 2.0
Root Hub under it, but the harddrive will not connect to the USB 2.0 Root
Hub, which I think it should to work under Hi Speed.
Any suggestions?