Firewire mixer MultiMix8 went wrong

Installation was straightforward. In the package, although no drivers, but Windows 7 (64bit) recognized the card too.
USB, I have found no problems. However went on FireWire port (the main reason of the acquisition) my Alesis MultiMix8 not right.
Shooting unfolded, the playing of files was always scrambled.

-> The newly purchased Delock card the problem had not.

-> Unfortunately, you can not give an exact explanation, or causes, but in FireWire is probably not unimportant the ominous chipset.

=> The basis of my experience, I can suffer no real recommendation for card issue.

ps Ultron Support has promptly responded to email inquiries, but could not solve problem.