NAOMI cabinet with JVS-PAC question

[fantoboy]

Ok- so I finally got my pc up and running in my CVS2 cabinet.  Got a JVS-PAC in there.  Everything is working great.  Here's the deal though...
I have a full NAOMI system in there with CVS2, and at some point I want to have a switchbox to toggle back and forth from the naomi to the pc. No big deal.  But my issue is the JVS-PAC needs the IO board to be powered to run on the pc.  Which means I need the NAOMI system on if I use the PC.  Seems unnecessary.  I'd rather have the NAOMI off if I'm not using it.  Can I power the IO board without powering up the whole NAOMI? 

[romshark]

The interface needs to be powered off a 5 volt and a 12 volt line (unless it's a Capcom IO powered off a Jamma harness).
You could draw power from the computer for this, similar to how some people power coin door lights and stuff. But then you have the same problem: PC needs to be on to play Naomi.

So you have really two options I can think of:
1.) wire a switch so that you can select power from either the Naomi setup or the PC setup.
2.) Get a small power supply for just the IO board. Not sure where to find one. A PC power supply seems overkill for that...

If you find a solution, let me know! I was wondering how to do the same thing for when I finally get my hands on a Sega Ring-Edge.