Casio WK-220 had it for over 10 years. I upgraded to a 6600 and donated my 220 to a senior living faculity so an elderly women could play. It's still running, I popped around to do some maintenance on it after it suddenly had an issue with the CMOS battery.
I am not quite sure, but my any chance do you have a 3/4 inch headphone jack you can plug into the keyboard and then into a headphone jack on your PC? It's how I did mine for a while, and it worked. You alternatively can record it as an accompaniment out to just record straight MIDI.
This is a song I made using my Casio WK-6600, sadly I could not get the right sound out of it, nor do I have a device to record into, so I made this with ZynAddSubFX to create something similar to what I produced on my keyboard, and used a weird workaround to control the VST with my keyboard.