It is a compact, efficient source of energy for a variety of electronic devices. By adopting advanced switching power supply technology, the device obtains power from high voltage alternating current in order to produce a stable five-volt direct current output and can supply up to 2 amps of current. Internally, it is designed with advanced circuitry that guarantees stable and reliable electric flow. Three system-level protection features guarantee security even under all sorts of situation- short circuit protection, over voltage protection and temperature control keeps the power supply and connected device safe. Numerous USB-powered devices such as smartphones, tablets, USB-powered fan, and other small electronics use these power supplies to give them the energy they need in order to reach peak performance.