Genuine Original Dell Slim 65W Replacement AC Adapter for Inspiron 15 (3521), Inspiron 15 (7537),Inspiron 15R (5520),Inspiron 15R (5521),Inspiron 15R (5537),Inspiron 15R (7520),Inspiron 15z (1570),Inspiron 15z (5523), 100% compatible with P/N: M1P9J, 332-1831, 04H6NV, 4H6NV, PA-12.