Power Adapter For Casio CTK-611 CTK-691 CTK-650 CTK-651 Keyboard Charger Supply | eBay
Amazon.com: MaxLLTo 6ft Extra Long 9V 850mA AC Power Replacement Adapter for Casio CTK-647 CTK-650 CTK-651 CTK-680 CTK-4000 Keyboard Wall Charger Power Supply Cord : Musical Instruments