The Dell MN444 is a 65 W AC adapter for powering compatible Dell laptops. It supplies 19.5 V at 3.34 A, so check that the laptop is among the listed models and uses the matching connector.
The adapter has a barrel connector with a sensor center tip, listed at 7.4 mm. It is described as a 3-pin model; these details help distinguish it from Dell adapters with a different plug format.
Its listed dimensions are 58 × 27 × 137 mm, for placement on a desk or another laptop workspace. Compatibility is listed for Dell Inspiron 1420, Inspiron 15 (1521), Inspiron 1520, Latitude 3330, Latitude D530, Latitude D630C, Latitude XT, Studio 15 (1535), Studio 15 (1536), Vostro 1310, Vostro 1500, Vostro 1510, Vostro 1710 and XPS M1330.