Amazon.com: HQRP AC Adapter for Casio CTK-3200 / CTK3200 / CTK-4200 / CTK4200 / CTK-4400 / CTK4400 Keyboards Power Supply Cord Plus HQRP Euro Plug Adapter : Musical Instruments
Amazon.com: AC Adapter for Casio CTK-4200 Piano Keyboard DC Power Supply Charger Cord Cable, 5 Feet, with LED Indicator, Compatible Replacement : Musical Instruments
Amazon.com: MaxLLTo 6ft Extra Long AC Power Replacement Adapter for Casio WK-110 WK-200 WK-210 WK-3700 Keyboard Charger Power Supply Cord : Musical Instruments