A Second AC Adapter At home and/or at work makes power access convenient and tailored to your needs. Also keep one in your carrying case at all times and never be without an AC adapter when you travel. It enables you to keep your battery fully charged when you really need it most on the road. Specifications Input voltage: 100-120V~2.5A, 50-60Hz Output power: 120W, Output Voltage: DC 19V, Output current: 6.32A (19V 6.3A Compatible);Connector:5.5*2.5mm(Outer diameter 5.5mm* inner diameter 2.5mm [!!! Pay attention to the interface size!!! ])