Your mouse once understood two protocols. What's your excuse? Before Bluetooth and USB, computers had PS/2 ports. Microsoft ...
Did you order that 4-port USB hub because it was almost free but now it’s just sitting in your junk box? Why not turn it into an In System Programmer for AVR chips? [Paul] came up with HUB ISP ...
There was a time when if you bought a USB mouse, 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 ...