Jokeyman, Excellent! If you click on the link I provided, you will see that one of the outlets is for a standard 3 prong plug, so I wouldn't need to use anything but the factory AC adapter, only plugged into this device rather than the wall. This power supply wouldn't replace any of Casio's fittings (I know about the whole "barrel" adapter problem, I came to a gig missing the AC adapter, and all hell broke loose; I ended up at a Guitar Center begging to borrow a floor model's, as no "normal, standard" AC adapters fit or worked, probably that "tip-negative" thing...)
This particular power supply claims to power everything from laptops to...? So hearing that it will easily take care of the Casio makes me really pleased. Thanks.