Aprelco UL Listed N DC 9V AC / DC Adapter Compatible with Casio CTK-700 CTK-800 CTK-900 CTK-2000 CTK-2100 CTK700 CTK800 CTK900 CTK2000 CTK2100 Piano Keyboard World Wide Use Power Supply Cord Cable

PwrON is specializing in the production of high quality and economical replacement Power supply for laptop, tablet, phones and other electrical appliances.
Products manufactured with the highest quality materials and include multiple smart features safeguarding against IV - incorrect voltage, SC - short circuit, IO - internal overheating . Chargers are certificated with CE FCC etc.

If you don't know whether the machine can use this adapter, you can view your original adapter's output parameters (voltage, current) whether conform to. if lost the original adapter, you can check the parameters at the bottom of the computer, or your illustrations of the machines.