An AC adapter is a power supply built into an AC mains power plug. The vehicle comes with a charging cable for connection to a standard plug socket. The electronic parts sometimes plug into sockets. A tow hitch with trailer wiring plug was optional. There is also a risk of damage to both the plug and socket. For high voltage use, sheathed versions of the banana plug and socket are used. Still other tokens plug into the computer, and may require a PIN. There was a drain plug but no plumbing. It produces a rising voltage that is sent to the spark plug. The exact terminal construction varies depending on the use of the spark plug. Some consumers have difficulty keeping track of a hardware token or USB plug. The combustion timing is controlled by the flame from the spark plug. With FlipPort, users can plug in external accessories. The "Toolbox" creates connection by making it easy for others to plug into the platform. A plug to be fitted to the rear of the plug.