CBD&reg;90W Replacement AC Adapter for Dell Notebook Model: Inspiron 17R (5720), Inspiron 17R (5721), Inspiron 17R (7720), Inspiron 17R (N7010) Compatible with P/N: R8D4D, 331-6301, 450-16686, MK947, Output: DC 19.5V 4.62A 90W Connecter size: 7.4mm/5.0mm (ref to the picture) Input: AC 100V - 240V 50-60Hz Package Includes: Only one AC Adapter This Product has 12 MONTHS REPLACEMENT WARRANTY!