US plug Power Adapter for Microsoft Surface RT Tablet PC.It is especially designed for Microsoft surface RT Tablet PC.Easy operation and convenient to use， it is perfectly suitable for travelers and Business man. SpecificationColor: Black， Size: 7.6 x 4.0 x 3.0cm， Package eight: 4.6 oz/131gCable length: about 1MInput: 100-240V 0.4AOperating frequency: 50/60HzOutput: 12V 2ACompatible Mode: Surface RT Tablet PC