in the box was also an adapter to allow it to be used with the older PS/2 interface. And if you were to go back a few more years into the past, you’d have found when you bought a mouse with a PS ...
For instance, a decent PS/2 to USB adapter will cost you as much as the Zero did, if not more. But if you just need to drive your Pi Zero from your old Model M (we hear you!) you’ve got to do it ...
TheRasteri also highlights a few even smaller HIDman variations made by others in the community, including one as small as an on-slot PS/2-to-USB adapter. Even if you can use custom drivers and ...