Laptop charger 90W universal Compatible for most laptops Chromebooks Ultrabook's. Plug and play, Easy to use with automatic voltage adjustment. You can power your different brand laptops with just one laptop power cord. Please do not charge laptops over 90W [ Note ] Incompatible models: This product is not compatible with Samsung , Type C lenovo ideapad charger 4.0 x 1.7mm tipAsus Laptop 4.5x3.0mm tip, Not compatible with computers above 90W Please ensure in advance that your product does not have them. [Wide output voltage, 15v-20v] - Input Voltage: worldwide 100-240V, 50 - 60Hz. Output voltage: DC 15V, 16V, 18. 5V, 19V, 19. 5V, 20V, max 90W, compatible Laptop power adapter 75W 70W 65W 45W 40W 33W. Each brand laptop has several different kinds of tips for different models. If you are not sure your laptop tip size, Please send your laptop brand and model number to us before buying, We will give Suggestions. Any problems, Please contact us before return ACER Chromebook 1