foone on Twitter: "The other way was the Serial Mouse. Not all PCs had serial ports, but they were quite common and standardized, so a serial port mouse was and obvious way
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Genius brand computer mouse - not PS/2, SERIAL port mouse. : r/LGR
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USB Mouse Decoder - Serial Output [1278] : Sunrom Electronics
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White mouse. Old computer mouse, serial port, dark reflective background. | CanStock
