A worldwide adapter, also known as a travel adapter, is a device used to connect electronic devices with different plug types to outlets in other countries. The main purpose of a worldwide adapter is to provide compatibility between the different socket systems used globally.

Depending on the country, the outlets can vary in terms of pin configurations, shapes, and voltages. A worldwide adapter is designed with various adapter pins or connectors that can be adjusted to fit the specific outlet types of the country you are traveling to.

When using a worldwide adapter, you simply plug your electronic device's plug into the adapter of the worldwide adapter and then insert the worldwide adapter into the socket of the visited country. This allows your electronic devices to be safely and correctly connected to the local electrical network.

Using a worldwide adapter is especially handy when traveling to different countries because it prevents you from having to bring multiple types of chargers or plugs for all your electronic devices. It offers convenience and flexibility in connecting your devices, whether it’s charging your phone, using a laptop, or connecting other electronic equipment.

It's important to note that a worldwide adapter enables physical compatibility between plug types, but it is not a converter. This means it does not adjust the voltage or frequency of the electricity. If the voltage in the visited country differs from that in your own country, a voltage converter may also be needed to ensure your devices can be used safely.