As one of Greatwall power supply family, PS90NA is specially designed to work with virtually any laptop on the market, and also it is compatible with the latest models from brands like Dell, Lenovo,Toshiba, Acer, HP, Sony, Viewsonic, NEC, SAMSUNG, Fujitsu, Panasonic and more. Delivering 90 watts of continuous power and an output of 19 volts, the ENERGY STAR® qualified PS90NA power adapter also protects your laptop against the dangers of over voltage, short circuits and over current. With eight detachable connectors and a lightweight design, the PS90NA lets you charge, back-up, travel and power your laptop conveniently at home or the office.