12VDC 1.25A 100-240V AC Power Adapter for Grandstream Gateways Input: 100-240V 50/60Hz 0.5A Output: 12VDC 1.25A Center: + DC Coaxial Plug: 2.1mm (ID) x 5.5mm (OD) PLUG / SOCKET TYPE: A (used in, among others, North and Central America and Japan)