PowerZone USB Charger with Surge Protector plug is easy-to install and use by just plugging in a wall socket. One-stop charging station for smartphones, iPhones, iPad, Kindle and tablets. These USB ports charge faster than traditional USB ports. An Intelligent built-in voltage sensing circuitry detects and responds to your device's power needs, while safety features, such as thermal fuses that power off your system in the event of a severe occurrence, ensure that your devices are protected.