Our USB receptacles feature a smart chip that recognizes and optimizes the charging power of your electronic devices for fast and efficient charging of tablets, phones, gaming devices, e-readers and a host of other electronic devices. Type A and Type C USB charging ports feature a total output of 5-Volt DC, 4.2 Amp. 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 .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].