AC Adapter For Casio CTK-541 LK-100 Keyboard Charger Switching Power Supply Cord AC Adapter For Casio CTK-541 LK-100 Keyboard Charger Switching Power Supply Cord Input Voltage : AC 100-240V Input Frequency : 50-60Hz Adapter Great for Replacement,US Standard Plug, Short circuit Protection.Light in weight and with heavy-duty cable-wire. Compatible with:Casio CTK-541 LK-100 Paino 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.