For Microsoft Surface 2 RT AC Charger Adapter 12Volt 24 Watt (1512 1513 1516) Replacement for Surface RT Tablet 24W Power Supply, Surface Power Adapter 1512. Input: AC100-240V, 50/60Hz (worldwide use); Output:24W 12V 2A. Automatic thermal, overload cut-off, and short circuit protection. Magnetic snap-in power adapter charges surface