??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 features a protocol chip that precisely reads the power needs of the connected device, delivering optimal power for more stable and faster charging.