I had the standard Nu Audio card, worked perfectly, had ram issues to start with and had to use processor memory to run it. I took it out and installed the pro version and when I loaded the 7.1 driver it crashed saying there was a problem. Looked at device manager and saw a conflict. So I deleted it completely from my system so I thought and found it had installed itself in a Logitech mouse driver directory (Go Figure). So here I sit knowing if I run the driver setup again what its going to do. I'm tempted to contact tech support and have them send me a cd with the driver. I have no answer!!