NA-830 AC & DC Power Supply For Computer, scanner, Multimedia Appliance INPUT: AC 220-240VAC 50/60Hz OUTPUT: AC 12 , 15 , 18, 30V OUTPUT: DC 12 , 15 , 18, 30V 1000mA Tip: (5.5*2.5mm & 6.3*3mm) LED : indicator UK plug wall mount & EU plug available Voltage is easy to change by the switch on the side of the adapter. Be sure you’re using the correct VOLTAGE & POLARITY for your device before plugging it in