USB (universal serial bus) charger and tamper resistant duplex receptacle. Features 2 high-powered USB ports and 2 tamper resistant receptacles. Tamper resistant receptacle shutter mechanism blocks access to contacts from most foreign objects for improved safety. Capable of charging 2 USB powered electronic devices while leaving the 2 receptacles free for other uses. Designed to charge tablets, smart phones, mobile phones, gaming devices, e-readers, digital cameras, and many other electronic devices. Smart chip recognizes and optimizes the charging requirements of individual devices. Grounding, side and back wired. 2.0 Type A.