This is a genuine DELL laptop AC adapter, model LA65NM130. It is 19.5V/3.34A 65W with a Φ7.4mm diameter connector and a center pin. The voltage was measured and found to be around 19.5V, which is acceptable. The following information is AI-generated: The LA65NM130 is a genuine AC adapter from DELL. The output is 19.5V 3.34A 65W, and the input is 100-240V 50-60Hz. The connector is a round pin with an inner diameter of 5.0mm and an outer diameter of 7.4mm. The LA65NM130 is compatible with DELL laptops (e.g., Dell Latitude 3480 3580 5280 5289 7280 7380 7470 7480, etc.).