Etssembo Specifications - Input:100-240V 50/60Hz; Output: 20V-3.25A 65W Max. Compatible with 20V 2.25A 45W; Connector size: 4.0 1.7mm. Safety Standards - Etssembo CE/FCC/ RoHS certified. Made with the highest quality materials,Built-in smart IC chip,Provide overload protection/Overheating protection/Short circuit protection.