Easy installation, Compatible with back and side wiring. Include screw and two standard size wall plate 2 (4.2A) Duplex Receptacle USB Charging ports, high speed charging to 2 USB device at same time.Compatible with USB 1.1/2.1/3.0 devices. Embedded In The Wall. Replace a standard duplex receptacle and save your space. Ideal for home, office and commercial places use. Child safe,15A Tamper Resistant receptacles increases safety, preventing objects from being inserted into the USB outlet. 4.2A 5V DC for 2 USB port provides the fastest charging to iPhones, iPad, iPad mini and other devices.