MaxLLT&trade; 6 FT Extra Long AC Adapter For Casio CTK-431 CTK-491 Keyboard Wall Charger Power Supply Cord PSU 6 FT Extra Long AC Adapter For Casio CTK-431 CTK-491 Keyboard Wall Charger Power Supply Cord PSU Input Voltage : AC 100-240V; Input Frequency : 50-60Hz Adapter 9V 850mA Great for Replacement,US Standard Plug, Compatible with:Casio CTK-431 CTK-491 Keyboard. Short circuit Protection.Light in weight and with heavy-duty cable-wire. 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.