Side buttons, side wheel and middle front button not working on mouse master mx3 for a while now and no update fixed this. Tried many fixes and researched on the internet but nothing helped. it is just like a normal mouse, having a scroll wheel and right/left click. Can not do tasks at work efficiently because no matter what actions i assign, nothing will work. Also the led for the battery no longer turns on on both the mouse and mx keys (i have no idea when they are out of battery). won't buy them again for sure, too expensive for something that only works normal like every other mouse/keys.