The time has come after 3 years to wash under water with a brush and a toothpick from dirt adhering to the hands, dried with a hot dryer. However, something closed in the mouse, and the reverse turned on, it seemed to me that I somehow pressed these g ons. Windows got into the settings, - there is no reverse. (I saw such a current in games and I don’t know who it doesn’t infuriate, when instead of left, you have the right) In short, I opened the mouse, tore off the label, but in vain, there are 2 screws under the plugs of the legs but only. A bunch of hair and pieces of dust flew in + the wire was slightly damp. I cleaned everything, dried it, but decided not to stop there. I bit off 3 LEDs with wire cutters. I had to unscrew the top micro-circuit to get to the two particularly annoying ones. I regret not doing this sooner. I did not buy the mouse separately. I got it with the MSI B-150M Gaming PRO motherboard. Began to use after the wireless broke. Now I'm used to it + I'm tired of changing batteries.