Hi MIrco, I use MX900 (mouse and keyboard) simultaneously with 2 different notebooks and an Apple device.
This works quite well for me too. Now and then the smooth change from one device to the other can be a bit tricky, but you can quickly get to grips with that. Even if you are working with the mouse at the edge of a device, it can happen that the mouse suddenly switches to the other screen and thus the whole focus of keyboard and mouse. Needs some top finger feeling at the beginning. In any case, I wouldn't want to miss it any more either.

Hello, I am satisfied and would buy this again. The good thing is that I can go to another PC with this mouse and it works immediately.