ASUS U90W-01 ADAPTER/IN//19V/3PIN 90 W Adapter  (Power Cord Included)

Asus 90W universal square adapters keep you going where and when you need it. An additional power adapter for your notebook means you’re always prepared and charged, whether at home, the office, or on the road. It also means less weight to lug around. The 90W universal square adapter comes with four different connector tip sizes, you could even lend it to friends and colleagues who use different Asus notebooks and Ultrabook's.