The Lenovo 90W AC Adapter provides a reliable power source for laptops that utilize the rectangular slim-tip connector. This black plastic charger operates on a universal input voltage of 100-240 VAC and a frequency of 50-60 Hz, making it versatile for use in different regions. Measuring 402 x 120 x 27 mm and weighing 360 g, the unit is designed for portability while maintaining a steady energy flow. It is specifically intended for users who need a replacement or spare power supply for their compatible Lenovo devices, though it will not work with laptops requiring round barrel-type plugs.