I have my first mouse. A Microsoft mouse with a steel ball. It would be interesting to figure the serial adapters, to get it down to a USB connector, to see it a modern computer would work with it. I am never going to try, and I will keep it in the box with my 3.5 inch external floppy drive, and my copy of Windows 386, (Windows 2) and my DOS 1.1 5.25 inch floppies.