Genuine ONN Electronics ONA17HO024 45W 19.5V 2.31A 5.5mm Tip 2-prong Universal Replacement AC Power Adapter. This adapter does not include the assorted tips kit.ONN Model Number: ONA17HO024Specifications:Watts: 45WInput: 100-240V ~ 1.6A 50-60HzOutput: 19.5V - 2.31AConnector: 5.5mm (outside) / 2.5mm (inside) straight barrel tip