Unique 3 USB Ports Maximize your family's charging needs with our upgraded 3 USB ports. Each USB C port provides 5V DC 3.0A max, the USB A port delivers 5V DC 2.4A max, the total output is 5V DC 4.2A, 21W max. Note: Does not support fast charging. Universal Compatibility Compatible with all kinds of USB devices with multiple charging protocols including Apple Protocols, Samsung Protocols and Standard BC1.2. Note: Not suitable for laptops. Durable Design Constructed with fire-resistant materials and multiple protections for family safety. Child-proof shutters prevent accidental insertions, and USB ports have surge protection. Type C ports tested for 10,000 insertions, Type A for 8,000. FCC, UL& cUL Certificated. High Energy Efficiency Achieves up to 87% energy efficiency according to DOE & CEC lab testing. Meets the Department of Energy Level VI, with extremely low standby power consumption of less than 75mW. USB Dedicated Charging Port Controller Each USB port