Worldwide input: AC100-240V, 50/60Hz, Output: 12V 2.58A. Perfect power adapter for Surface pro 3 pro 4 laptop / tablets Safely designed-Manufactured with high quality materials and include laptop safeguard features against incorrect voltage, short circuit, internal overheating Compatibility-The Surface replacement charger works with Microsoft Surface Pro3, Microsoft Surface Pro 4 i5 i7, Surface Pro 5