To fix a problem with a Logitech trackball button, you don't have to solder anything or do anything else not expected of an average user. While Logitech doesn't provide troubleshooting tips ...
First off, I'm very picky when it comes to mice. I can't stand the Apple-style acceleration curve. Never have, probably never will. I have always used apps like Steermouse to tweak the mice on my macs ...
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