About this item Flawless Compatibility -- Exclusively designed switchable round connectors will fit a variety of laptops with round power connectors, ensuring seamless connectivity for efficient charging. Output: 19.5V 3.34A (65W). This charger is compatible with laptops that use a 65W adapter and supports 19.5V 2.31A (45W) models, allowing appropriate power delivery during charging. Certified Safety -- Certified and listed by a nationally recognized electronics safety expert. Only products with top quality, workmanship, and safety levels can pass stringent quality tests to obtain this certification. Connector Type -- 4.5mm x 3.0mm with an included 7.4mm adapter. Supports two commonly used round connector sizes, helping reduce the risk of selecting an incompatible replacement charger. Dimensions: 4.21 x 1.85 x 0.3 inches.