Works great. After a couple hours researching and getting the information together, I was able to install this program called LinuxTrack onto my Macbook pro, move a file or two around, and that was it really. You can fine tune the sensitivities to your liking in the LinuxTrack program, and then go into X plane 10 and use it. You do not need to check the "trackir5" box in the devices tab inside the Xplane 10 game. That wasn't necessary for me. Trackir5 has 3 functions once inside X plane 10, and you will need to assign them to 3 different buttons on your keyboard before the Trackir5 will start to work in the game. The 3 buttons are Pause, Recenter, and the other is simple the on/off switch of the head tracking device. You will be using the recenter button all the way, so I made it my space bar which is convenient. The on/off button will be used quite a bit too which just allows you to go back and forth in-game between using the head tracking, and not using it. I've found that when using just a single 27 inch monitor, the utility of this head tracking device is OK, but not what I really hoped for. Definitely still useful in some areas though. You have to set the sensitivities really low, or else you will be just jumbling the screen around quite a bit. If you have any flight radios, multi panels, switch panels etc., anything that causes you to lean forward and off to the left or right during in game use of the trackir5, the screen will obviously follow your head, and it can get a little aggravating sometimes. I find that I only turn on the tracking device when I'm taxing on runways, mid-flight to look around a little, or when I'm doing a VFR landing and I want to look to my left while flying downwind parallel to the runway. The biggest smile that I get from using trackir5 is when I'm able to just sit up tall in my seat and look up over the dash to get a better view of the approaching runway. That is really nice and convenient to be able to do that while your hands are on a yoke and throttle quadrant. Other than that though I don't use it too much. It comes with the hat clip, which I taped on top of a pair of good headphones and it seemed to work OK. I bought the track clip pro made by trackir. I can't say for sure if it actually works better than the hat clip or not, but it clips right on the side of my headphones now which is 10 times better than taping the hat clip to headphones. Overall it's still great and I'm glad that I bought it because it definitely has its place even with a single monitor. If you have budget limitations though, and using a single monitor, I would recommend putting this at the bottom of the list when considering flight yoke, throttles, radios, etc. Just my opinion. Good luck.