These legs are for the same thing as laptop stands - to lift notebook and improve cooling. They need less plastic than stands for large notebooks and also provide an easier way to customize height/angle.Modify as needed. Print. If your laptop still has small rubber legs, the concave part on top of the legs will ensure that your laptop stands firmly. If you have lost these rubber legs, you could put one of the two "horns" around the cavity inside the holes for the legs.