it may well have come with an adapter for a 9-pin RS232 serial port. Those mice from a decade or more ago would have contained the software to recognise the interface into which they were plugged ...

The first thing you notice about this adapter, and the big departure from ... working with something that doesn’t have a literal serial port, no worries. All of the lines coming from the CH340G ...

A device that adds a serial port to a computer. It plugs into the USB port and contains one or more serial port sockets. See serial port. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other ...