[CentOS] hardware problem trust usb2.0 pci card

after installing this card centos 3.4 detected and configured it ok.
i'm unable to use any device on the card.
tryed it with creative thumbdrive (mass storage device)
an samsung usb2 dvd writer.
suspecting the card to be defective i replaced it but didn't help

centos detected the via chipset alright and loaded the modules.

any ideas?