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/2 connector fitted, it may well have come with an adapter for a 9-pin RS232 serial port.

Anyone have a source for such a beast? Everything I'm finding is either mini DIN or male DIN.For clarity, the B&O turntable's cord terminates in a male 7 pin DIN connector. I need to convert this ...