I just received the Casio keyboard in bought on eBay a while back.
It works, and it has all of the sounds I hoped it would (minus the automatic arpeggios for some reason, but the automatic chords + bass work fine). Back to the future!
If you want to hear for yourself, here’s a quick sample I recorded 5 seconds ago!
It’s time for all you cheese-haters to run for cover!!!
Yippeeeeeeee!