AC Replacement Adapter for Casio CT-648 CT648 Keyboard Power Supply Cord AC Replacement Adapter for Casio CT-648 CT648 Keyboard Power Supply Cord Input Voltage : AC 100-240V; Input Frequency : 50-60Hz. Great for Casio CT-648 CT648 Replacement,US Standard Plug. Compatible with: Casio CT-648 Keyboard MONEY BACK GUARANTEE -MONEY BACK GUARANTEE - We are Company that wants your Repeat Business so, if You Do Not Like our Product or Don't Want It For Any Reason, We Will Happily Accept The Return and Give Your Money Back. No Questions Asked. 30 Days Money Back Guarantee - 24 Months - Exchange.