original Dell charger used to replace a Dell FE P1-00 of 90w. ending with the model FE P0-00 being that of 65w. (FE = manufacturer FLEXTRONICS to Dell) O ther reference DELTA manufacturer (with the same 7.4 and 5 mm ferrules) starts with DB ---- This begins with the manufacturer LITEON THE ----- replacing all Dell PA10 used by my Dell E 5410 and used by other Dell laptops series 5, 6, and D. Note: Dell PA 3E diet with 7.4 and 5 mm ferrules is also usable 90w and 65w with these series of pc above.