I have been using the Logitech G13 for almost a year now on Windows to play games and I have loved it. I was able to link key layouts to specific games or choose a key layout manually with no issues. I recently started using it in OS X for the same games. I cannot link a profile (key layout) to the games, and the software does not allow manually selecting profiles. I contacted Logitech support and they are going to find out if the software will be updated to remedy either of these issues. I am just posting this so you know, just in case you were considering getting one. You should know it limitations. But, when it does work it a wonderful thing to have.