I also had problems of the computer not recognizing it initially, but then I read the instructions on the site. I forgot to download the drivers automatically. When the computer detects the "new device" click on the bubble. EVEN IF YOU THINK YOU'VE ALREADY INSTALLED EVERYTHING YOU NEED you need to do this step.

It will ask where you will download drivers from, and you have to say to download "automatically." If you have the Castle Creations Link installed in your computer, it will find the drivers for the mamba max.

If none of this works, contact Castle Creations. They have guys on the other end of the line that know what they're talking about. However, we should be able to help you out here (especially seeing that it is a holiday in the United States (4th of July)).