This is a standard 45W slim-tip power adapter used for a wide range of Lenovo ThinkPad and IdeaPad laptops from the mid-2010s. The unit provides a 20V output and is designed with an rectangular, "slim tip" connector rather than the older round barrel or newer USB-C styles. It features built-in safety protections against over-voltage and short-circuiting, and is compatible with models such as the ThinkPad T440, X240, and Yoga 11e.
