ADAPTOR Delll INSPIRON 19.5V 3.34A 7.4x5.0 3135 3137 3437 3420 3520 3521 ADAPTOR Delll INSPIRON 19.5V 3.34A (7.4x5.0) 3135 3137 3138 13Z 5323 14Z 5423 15Z 1570 5523 1120 1318 1440 1464 1564 1570 1750 1764 3437 3420 3421 3442 3443 3458 5421 / 14R 4420 5420