About the noiselessness of the buttons. Prior to that, I converted about five different mice into silent ones (nothing complicated, square silent buttons are ordered on alik and re-soldered) and I knew approximately what kind of noise level a click turns out to be. In this one, it is quieter than with conventional three-pin buttons, but louder than it could be with silent ones, and they didn’t finish it here. Either the board lies in the case so that the sound is amplified, or the buttons are like that. Most likely the first. I thought about disassembling and inserting a board from the old "regular" B110 into the new case, but in the new one a different arrangement of elements will not work. Rejoice those who still have the old B110, if you need silence, it's better to solder the buttons and don't buy it. So it also turns out to be an encoder on the wheel (-10 to the scroll life). In the old version, there is a wheel with slots and an optocoupler, there is nothing to break there, and encoders start to fail after a while, etc. Perhaps there are some branded ones in this one, I don’t want to check.
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