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Oct 21st, 2009 at 2:03 pm
I’ve noticed a lot of people here were having a hard time finding the right adapter for their specific keyboards, and I’ve got a solution. You don’t actually need to buy a Casio brand adapter to fit your Casio keyboard (matching model numbers can be tricky online). Here’s a fool- proof method for finding the right adapter every time;
On the back or underside of your keyboard, there should be a voltage rating (which looks like a number followed by ‘V’. For example, ‘9V’ or ‘8V’) and a milliamp rating (which looks like a larger number followed by ‘mA’. For example, ‘850mA’ or ‘900mA’).
With those two numbers, you can find the exact adapter you need.
For example, my keyboard is rated ‘9V 850mA’, which looks like a bunch of gobbldeygook until you type it into a search engine or show it to a salesperson at any electronics or toy store. Almost all adapters are rated this way and regardless of the manufacturer (i.e. Casio, Yamaha), you’ll always get the exact adapter you need when using voltage and milliamp numbers. Just be sure the other end of the adapter is the right fit for your input jack, and you’re all set. 
Hope that helps.
Oct 21st, 2009 at 4:11 pm
As the last reviewer wrote, we also ordered the adapter to go along with the keyboard we ordered and held both items until Christmas. The adapter was not the proper adapter for the keyboard as pictured.
Oct 21st, 2009 at 7:16 pm
We bought also the keybord and the adapter (as recommended) and it does not fit. I already tried to buy a new one, but it is not available.