[lokum]

CTRob84 - yes that's the one I got. Other differences I've noticed from the normal MX3-M are when you press the mic toggle button the airmouse cursor is disabled until you press it again (so it goes into a voice only type mode with the led a solid green indicating the mic is on), and also the volume buttons are now just like volume buttons you have on a normal keyboard so you can map them as Volume_Up or Volume_Down in autohotkey rather than having to use a dll call.