TI based Firewire 400/800 PCI Card not recognised

I managed to install 10.7.2 on my system and everything works fine including the FW400 ports on my M/B.

When I install this PCI FW400/800 card which has a TI chipset (TSB81BA3 & TSB82AA2) it is not recognized
(I tried disabling the FW ports on my M/B but nothing changed).

http://www.delock.com/produkte/gruppen/ ... anguage=EN

Any ideas?