@duesi:
It fried your A4000 mobo? How do you know that it was the X-surfs' fault ? You didn't put an old 2.5" HD on it? The X-surf don't give enough amps (300 mA+) to spin them around.
I've used a X-surf for two years now and I've never had any problems with it. It's a easy board to install, PPPoE drivers are included with it and it features IDE ports to. I think the X-surf 2 is designed quite similar to the X-surf with the exception of no BNC.
What do X-surf users think of the speed of their cards?