Microsoft Trackball Optical 1.0 USB Wired Mouse 5-Button PS/2 Ergonomic

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Vintage Microsoft Trackball Optical 1.0 USB Wired Mouse 5-Button PS/2 Ergonomic

Microsoft Trackball Optical 1.0 PS2/USB Compatible Mouse 5V 100mA PN X08-70386

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Microsoft Trackball Optical Computer Mouse 1.0 USB X08-70386 -- TESTED - WORKS