USB (universal serial bus) ports charge any electronic device that is capable of being charged via a 5V (volt) power adapter. 700mA (milliampere) charging capacity. Indicator light notifies user that device is charging. Tamper resistant shutters 15A (ampere) and a 125V receptacle. Automatic grounding system, thermoplastic top and back-body, and zinc-plated steel mounting strap. Durable injection molded housing and PVC (polyvinyl chloride) resin comply with UL94 5V flammability rating. Triple wipe blade contacts and double wipe ground contacts to insure long term retention. Built-in wire strippers, backwire clamps on side terminals, and tri-combo screw heads provide easy installation. Ultrasonic welding and integrated construction provide superior ground integrity, even under heavy use.