90W AC Adapter. The Lenovo 90W AC Adapter offers convenient access to power wherever you need it. It performs to the same specifications as the standard 90W AC adapter that ships with IdeaPad Y310/410/510/Y530/Y730/U330 and Lenovo 3000 G410/510 notebooks and can be Carried as a spare. Keep one in your carrying case, one at home, and another in the office for maximum uptime. This product supports IdeaPad Y310/410/510/Y530/Y730/U330 and Lenovo 3000 G410/510 notebooks only and is not compatible with ThinkPad notebooks, other IdeaPad notebooks or other Lenovo 3000 notebooks.