OS/2, Ecomstation & Arcaos - Microsoft Mouse for DOS & OS/2 from 1990, strangely enough there is no mention of MS Windows on the package at all. https://www.ebay.co.uk/itm/Microsoft-Mouse-PS-2 -Version-Serial-interface-included-for-DOS-OS-2-Systems ...
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Microsoft Mouse Port Compatible Mouse 2.1A (92841) - PS/2 2-Button Ball Mouse | A1 Used Computer Systems – Computer Parts, Repair Services
![Microsoft Wheel Mouse (X05-51692) PS/2 2-Button Ball Scroll Mouse | A1 Used Computer Systems – Computer Parts, Repair Services Microsoft Wheel Mouse (X05-51692) PS/2 2-Button Ball Scroll Mouse | A1 Used Computer Systems – Computer Parts, Repair Services](https://www.a1used-computers.com/_dynamique/catalogues02/zoom2/0e5b49160268.jpg)