I think I have a trackball upstairs in a box from circa 2000 that I suspect still works fine, with an ADB-USB converter. The design goals of these two devices

I think I have a trackball upstairs in a box from circa 2000 that I suspect still works fine, with an ADB-USB converter. The design goals of these two devices are different. Of course, it's perfectly fine for different devices to have different design goals. In fact, they should!