4.2 AMP Dual USB Charger Outlets This USB outlet is equipped with a smart chip, which reads the power needs of devices connected to the USB ports to deliver optimal power. Intelligent chip charges at the optimal power allowed by the device, so your devices are protected from overcharging and overheating. Each USB port can reach up to 3.1A individually, with a maximum 4.2A output in total is shared between two USB ports. Superior Safe Outlet for Children Tamper-resistant receptacles feature an internal shutter mechanism that prevents unwanted objects from being inserted into the receptacle and comply with residential building codes, add layer of safety for kids. Residential and Commercial Applications From the bedroom to the commercial building, from the cafeteria to the library, The USB Charger Outlet is perfect for any application. Good for Kitchens, Hotels, Meeting Rooms, Bedrooms, Office Cubicles, Home Offices, College Dormitories, Airport Lounges, Cafes, Coffee Houses, Salons and Spas Restaurants and other public areas.