For Microsoft Surface 3 Adapter Power Supply Charger 13W 5.2V 2.5A (Model: 1623) Replacement power supply for Surface 3, With 4.9 FT (1.5 meters) USB cable. Input: AC100-240V, 50/60Hz (worldwide use); Output: 5.2V 2.5A 13W. Simply connect the USB cable to your Surface to recharge the battery. This AC power adapter to standard micro USB cable can also be used to charge other devices like a smartphone, tablet or digital products.