!!! Please Note !!! When you choose the laptop adapter, in addition to matching the models also pay attention to whether the two places is consistent with your original power supply: 1. The voltage and Current should be same as your original power supply. 2. Connector size must be consistent with the original adapter, Please confirm if it is appropriate. 3. Connector size:7.4mm x 5.0mm.Please confirm the size to make sure that it fits your computer. Material: PC (UL94-V0 flame retardant) Color: Black Power supply: 180W power adapter Input voltage: 100-240V ~ 3.5A 50-60Hz Output parameters: 19.5V-9.23A Connector Size: 7.4mm X 5.0mm with center pin Item size: Approx. 7.8 *3.93*1 inch Item weight: Approx. 26.8oz / 760g Package: 240W Adapter *1, Power Line *1 Compatibility: Dell Latitude E5470, E5570, E7240, E7440 Dell Inspiron One 23 (2350),Inspiron One 2320, OptiPlex 3011 AIO, Dell Alienware 15 R1, R2, M14X M15x M17x,17 R2, M17, M17x R4, X51, X51 R2 Precision 15 7000 Series (7510), Precision 17 7000 Series (7710), Precision M2800, M4600,M4700,M4800, M6300 M6400,M6600, M6700, M6800, 15,7510, 100% Compatible with Dell P/N: WW4XY, 0WW4XY, DA180PM111,FA180PM111 ADP-180MB B, DW5G3, 0DW5G3, 74X5J, 074X5J, WW4XY, TW1P0, F0G4K, JVF3V, 331-1469, 331 -7957 See moreGUARANTEE: Within 30 days of purchase, we offer a no-questions-asked full money back guarantee. Additionally, for 2 years from the date of purchase, we will exchange your product free of charge should it become defective. ?Here’s What You Get?: 1 x power adapter, 1 x high-quality AC cable?SAFETY RELIABILITY?All of our product lines are put through rigorous quality control procedures to ensure safe, reliable operation for years to come. We guarantee our products will charge your device as efficiently as the original charger, or any other replacement. ?Multiple Protection ? UL certified.Internal smart circuit keeps you and your device safe with multiple protections, including over current protection, over voltage protection, short circuit protection, over heating protection, overload protection, surge protection and under voltage protection. ?System Compatibility? Fit for Dell Latitude E5470, E5570, E7240, E7440 Dell Inspiron One 23 (2350),Inspiron One 2320, OptiPlex 3011 AIO, Dell Alienware 15 R1, R2, M14X M15x M17x,17 R2, M17, M17x R4, X51, X51 R2 Precision 15 7000 Series (7510), Precision 17 7000 Series (7710), Precision M2800, M4600,M4700,M4800, M6300 M6400,M6600, M6700, M6800, 15,7510. ?Specifications:Input Voltage? AC 100-240V,50/60Hz, Output : DC 19.5V, 9.23A, Power Wattage: 180 Watt, Outlet: 3-prong, Connecter size: 5.0mm x 7.4mm.