Logitech MX Ergo Wireless trackball mouse
Few things in computing have stayed quite as consistent as the keyboard and mouse. With each passing year monitors reach ever higher resolutions and framerates, graphics cards pack in more and more teraflops of graphical horsepower, and CPUs add more cores and greater clockspeeds. In contrast, although peripheral manufacturers will always make bold claims about the speed and reliability of their products, the keyboards and mice they produce are fundamentally the same from year to year. 
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