Apple MagSafe: The MagSafe Airline Adapter powers your Apple portable computer while in-flight, connecting to the EmPower port near your airline seat. It's compatible with all Apple laptops with a MagSafe power adapter port. An additional adapter included in the kit allows you to connect to 20 mm in-seat power ports on some airlines. However, using the MagSafe Airline Adapter in a car won't provide power or charge the battery. For safety, unplug the adapter before leaving your seat and avoid spilling liquids on it. Refer to your computer's user guide for more safety and regulatory information.