A universal adapter is a device that allows electrical appliances to connect to different types of power outlets around the world. It typically features multiple plug configurations, making it compatible with various socket types used in different countries. This is especially useful for travelers who need to charge their devices without carrying multiple adapters. These adapters often include built-in safety features, such as surge protection, to prevent damage to connected devices. Some universal adapters also come with USB ports, allowing users to charge multiple devices simultaneously. They are essential for anyone using electronics abroad, ensuring convenience and compatibility.