Amazon.com: Guy-Tech Global DC 9V AC/DC Adapter Compatible with Casio CTK-4000 CTK4000 Digital Piano Musical Keyboard 9VDC Power Supply Cord Cable Charger : Musical Instruments
Amazon.com: Beatch Global DC 9V AC/DC Adapter for Casio CTK-4000 CTK4000 Digital Piano Musical Keyboard 9VDC Power Supply Cord Cable Charger Mains PSU : Musical Instruments
Amazon.com: AC Adapter Power Supply Casio CTK-3000 CTK-4000 WK-110 WK-200 WK-210 : Electronics
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: Accessory USA AC Adapter for Casio CTK-4000 CTK-558 CTK-700 Piano Keyboard Power Supply Cord Charger : Electronics
Amazon.com: Generic Compatible Replacement DC 9V AC Adapter Charger for Casio CTK 4000 CTK 558 CTK700 Keyboard Power Cord : Musical Instruments
Amazon.com: K-MAINS DC 9V AC Adapter for Casio CTK-4000 CTK-558 CTK700 Keyboard Power Supply Cord : Musical Instruments
Casio CTK-4000 Premium Keyboard Pack with Power Supply, Keyboard Stand and Professional Closed Cup Stereo Headphones : Amazon.com.au: Musical Instruments