The Ploopy Nano 2 has a PAW-3222 sensor with a 1,000 Hz polling rate and a default setting of 1,000 CPI (counts per inch), but support for up to 4,000 CPI.
Ploopy has been making trackball mice and other niche computer input devices for more than six years, including models with classic designs, one of the only decent USB touchpads available for Windows ...
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