High-Speed Charging Tech – In-wall duplex receptacles with two USB charging ports with a total output of 4.2 Amp 5V DC. When use separately, the maximum output of the Type C port is 3.0 Amp 5V DC, and the Type A port is 2.4 Amp 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 Compatibility -Two 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. Universal Compatibility- Type A and Type C USB charging ports feature a total output of 5V DC, 4.2Amp, 21W.- Compatible with all kinds of USB devices with multiple charging protocols including Apple Protocols, Samsung Protocols and Standard BC1.2.- Meets a variety of charging requirements to make sure your devices are charged at blazing-fast speeds. [NOT for laptops]