I own the mouse for five weeks, they operate primarily at an Eee PC netbook from Acer and am very satisfied. The installation went smoothly (device was immediately recognized) and the ergonomics are very good. Especially practical is the fact that the mouse gets on well with almost any surface - from the ceiling on the sofa up to the glass table it is always very precise. Bluetooth here is the very pleasant advantage that no USB slot must be blocked with a transmitter / receiver.