UpBright 9.5V AC/DC Adapter Replacement For Casio CTK-2400 CTK-4400 CTK-2090 CTK2400 CTK4400 CTK2090 61-Key Portable Piano Keyboard DC9.5V 1.0A 1A 9.5VDC 1000mA Power Supply Cord Battery Charger PSU World Wide Input Voltage 100-240VAC 50/60Hz. OVP, OCP, SCP Protection (OVP: Over Voltage output Protection. OCP: Over Current output Protection. SCP: Short Circuit output Protection). Tested Units. In Great Working Condition. UpBright 30 days money back guarantee. 1 full year service warranty. UpBright New Global 9.5V AC / DC Adapter Replacement For Casio CTK-2400 CTK-4400 CTK-2090 CTK2400 CTK4400 CTK2090 61-Key Portable Piano Keyboard DC9.5V 1.0A 1A 9.5VDC 1000mA Power Supply Cord Cable PS Wall Home Battery Charger Mains PSU