PDTXCLS Dijkoo 9 Pin Serial Optical Mouse + Mouse Pad!! - 2 Button - DB9 Connection for Dos, Windows 3.1, Win 95, 98, NT - Vintage - Legacy;

2-Button 9 Pin Serial Mouse Original IBM PC XT AT, Compaq, Dell, Packard Bell, Hewlett Packard, Notebook or IBM Compatible - Any Computer that has a 9 pin serial connector.