What power did he ruby slippers have?

The ruby slippers in "The Wizard of Oz" possess the magical power to transport the wearer anywhere they wish to go, specifically back to Kansas. They also symbolize the idea that one's true home and power lie within oneself. Additionally, they protect the wearer from harm, as seen when they shield Dorothy from the Wicked Witch of the West. Ultimately, they represent the journey of self-discovery and the importance of finding one's way home.