Genuine FSP Group Inc. FSP040-RAB 40W 19.0V 2.1A 5.0/1.7mm tip 3-prong Replacement AC/DC Power Adapter.Model Number: FSP040-RABSpecifications:Watts: 40WInput: 100-240V ~ 1.5A 50-60HzOutput: DC 19.0V - 2.1AConnector: 5.0mm (outside) / 1.7mm (center) right angle tip