Dell 8N2T2 is a 240 W AC adapter for powering a notebook computer. Its 19.5 V output rating and model number identify this particular adapter and help when matching it with a suitable device.
It has a 3-pin plug and a 7.4 mm connector. These details help distinguish it from adapters with different plug or connector formats. The listing describes it for Dell laptops but does not name specific compatible models, so check that the ratings and connector suit your notebook.
It can serve as a replacement power source for a compatible Dell notebook or as an additional adapter for a work area. Its stated output rating describes the power it provides; it does not establish compatibility with any particular laptop model.