About this item Safety: This item is up to nationally recognized standards for high-level electronic safety. Important: Not Fit for 4.5*3.0mm & USB-C - Please check our images to confirm the compatible voltage and connector for the charger. [Do not buy if your laptop requires more than 45W]. # Flawless Compatibility # -- Exclusively designed round connectors will fit for Vivobook, Zenbook, and Chromebook laptops of 45W and 33W with round power connectors. # What's in the Box # -- 1 X Power Adapter. # Other Specs # -- Output: 19V 2.37A 45W (Fit for laptops of 45W & 33W), Input: 100-240V. Dimensions: 2.37 x 2.37 x 1.06 inches.