Per Lenovo ThinkPad Laptop Adattatore Caricatore AC 90W 20V 4.5A-SQUARE SLIM TIP
AC Input: 100 - 240V - DC Output: 20V. Plug Tip Size:Square Tip. Plug Tip/Connector Size:Square Tip ( Be careful! 1 x AC Power adapter | 1 x Power cord. Adapter Power:90W. Compatible Laptop Models AC Input:100-240V ~ 2.0A 50-60Hz. ).