BestCH Global 12V AC Adapter For YAMAHA PIAGGERO NP31 NP11 NP30 NP 31 NP 11 NP 30 Portable Grand Digital Piano Keyboard 12VDC Power Supply Cord Cable PS Wall Home Charger

Product Specifications: ? Plug Type: US prong ? Input Voltage:AC 100-240VAC Worldwide Use ? Input Frequency Range: 50-60Hz Kindly Note: ? This item is replacement power adapter ,not Orginal/Genuine. ? Please be kindly informed that the total wattage of the device should not exceed the max wattage (shown on the adapter's label) of this adaptor ? And we suggest it to be de-rated 10%-20% when using to prevent overheating Warnings: ? Don't open or modify the power supply / power cord/ power cable ? Please leave children, kids far away from high voltage power source ? Please use it under professional electrician's guides ? Any abuse or improper use will void warranty