Optimum Orbis Ac Adapter for Microsoft Surface Pro 64GB Tablet 4GB, Windows 8 Pro Tablet Power Supply Cord Charger Power: 120V-240V/ 50-60Hz Output:12V 3.6A 43Watt; Optimum Orbis dc adapters are CE, FCC, RoHS certified for safety. Protection: Short circuit, over current protection, over voltage protection, over temperature protection. Designed to meet or exceed your original manufacturer's ac adapter Warranty info: Order your replacement ac adapter backed by our 30 day money back guarantee, 18 months warranty; 24/7 email support, free exchange. Package includes: 1 AC adapter, 1 extended power cord;