Everyone scolds synps, installed it, set it up once and forgot about it. There are 2 such mice, at first I took it for myself, worked with it for 4 months, then the girl broke the mouse (logitech) let her use her, the girl got used to it and began to use it permanently. Works for computers for 15 hours a day, the mouse only pleases. After that, I took the same one again, of course, a different batch, but still excellent quality. I don’t quite understand why so many negative reviews are connected, a marriage may come across.