: It is used as a universal replacement charger for powering and charging laptops, netbooks, or portable devices. It takes standard wall outlet power and transforms it safely down to the correct laptop voltage. By swapping between the labeled modular barrel tips included in the kit (such as N1, N2, N3, N5, N9, N14, N15), it can dynamically fit and power multiple electronics brands like HP, Dell, Lenovo, Acer, and ASU