AC INPUT: 100-240V AC | 50/60Hz | DC OUTPUT: 9V 1A
The polarity of DC plug is inner Negative ( - ), outer Positive ( + ). Polarity is irreversible, you can find your device polarity information printed beside the power port.
8.2feet, special design for keyboard use; US Standard Plug, Short circuit Protection. Over Voltage Protection, Over Heat Protection.
[ After-sales warranty policy: If you have any questions, please contact us! We are responsible for every product sold ]