Thank you for your reply.
I managed to get the b to b cable, and expected that the Origin would provide the necessary power to the connected controller keyboard, but unfortunately apparently not. That's a real shame if it is indeed the case. I am trying to avoid using computers in the process, preferring to stay somewhat old school, although I appreciate your suggestion, and indeed it does work perfectly!
I wonder if someone could confirm that the Origin provides no USB power?
If that's the case, can anyone offer a definitive answer I wonder, as to what the proper mains adaptor for the small analog factory keyboard should be?
Thanks for everything so far.