High-Speed Charging Tech In-wall duplex receptacles with two USB charging outlets with a total output of 4.0 Amp (2.0A standalone), 5V DC Smart Chip Identify and optimize the charging current of your devices Tamper Resistant Shutters Prevent children from inserting any unwanted objects into the outlets Universal CompatibilityTwo high speed USB ports provide the fastest charging, compatible with iPhone, iPad, iPod, Samsung Galaxy/Note, Android mobile phones, E-readers, game systems, tablets, headsets and digital cameras, etc. Easy to install Support side wiring and back wiring. All screws have been loosened for ease of installation, there's no need to loosen the screws counterclockwise before wiring. Fits in a standard wall box. Can replace existing outlets. Compatible with standard wall plates and can be multi-ganged with other devices. Providing more space for maneuvering and reducing stress on USB cables