The Genuine Lenovo 45W Charger is a black power adapter with a yellow square tip designed for Lenovo laptops. It has a maximum output power of 45W, delivering a voltage of 20V. Compatible with Lenovo ThinkPad and ThinkCentre models this charger comes with a 3-year manufacturer warranty and is made in China. The unit is 6 inches long and is suitable for various Lenovo laptops that require a 45W charging solution.