Power adapters are used to supply power to portable computers and
certain desktop computers. Power adapters convert AC current to
DC current for supplying to computers. The Dell power-adapter kit
consists of the power adapter and the power cable. The power-adapter
power rating (65 W, 90 W, and so on) depends on the computer it is
designed for, and the power cable varies based on the country where the
power adapter is shipped.
CAUTION: It is recommended to use only the power adapter that
shipped with your computer or a Dell-approved replacement power
adapter, to avoid damaging your computer.