I don't have any Xbox type games on my PC, so was unable to test button capability, but I have no doubts they would be/are valid given that this HOTAS suite is at heart a 360 controller in HOTAS form. I buzzed around the airfield awhile, and was instantly re-immersed in my Saitek X36 days, since that's essentially what this controller suite is. Back in-game I got full throttle range and full stick control. I then returned to the XP game controller applet and calibrated the axis. I was able to get 75% thrust and reasonably flyable stick control. As expected, there was no way to assign buttons in this sim, and control of views was inoperable. Without doing any calibration I loaded up the always ammenable Strike Fighters, and assigned the X/Y (pitch/roll stick) and Z axis (throttle thrust) in-game. Going to Properties/Test I verified basic functionality. It is then listed under the 'Game Controllers' control panel.
Upon hot plugging the USB it is recognized as an Xbox 360 Controller, auto-loading drivers from XP if first use.
The AC6 HOTAS does indeed work on the PC.