GPK Systems&reg; Ac Adapter for Samsung Series 9 Np900x3a 900x3a-a03 Np900x3b-a01us Np900x4b-a02us Np900x3a-b05us Np900x3a-b07us Np-900x3a-b03us Np900x3b-a02us Np900x3c-a01us Np900x4c-a01us Np900x4c-a02us Np-900x4c-a03us N135-ka01us Laptop Power Supply Cord Notebook Battery Charger Input: 100 - 240 V (worldwide use) Output: DC 19V 2.1A 40W Service & Support 1 year warranty Designed exclusively for use with the laptops 100% compatibility with the original Replacement power supply AC power adapter was tested to match and/or exceed original product at low price.