Equipped with multiple protection functions, including reverse polarity protection, over-current protection, and over-temperature protection. Wiring mode is DC 5.5/2.1, terminals is non-soldering, so is convenient to install. Applicable to mobile power supplies, tablet computers, recorders, and other USB 5V power supply devices. This converter can withstand the maximum current is 5A, as long as your equipment in the 5A current can be used, the current is adaptive. This output step down converter with 4USB, features automatic identification, and compatible with most devices. Specifications: Input: DC 7V-60V, Output: DC 5V / 5A, Efficiency: 95% (maximum), Module Size: 6.3 x 5 x 3cm/2.4 x 1.9 x1.1inch, Working Temperature: -40℃ ~ +85℃, Load Capacity: 5A, Wiring: DC 5.5/2.1, USB1: QC2.0 Automatic Identification 5V2A port, USB2: QC2.0 Automatic Identification 5V1A port, USB3: D+ D- shorting is compatible with most devices, USB4: D+ D- shorting is compatible with most devices. Note: If the device only allows 1A charging current, the module will only output 1A current, not the 5A power supply will always output 5A current for any device, 5A charger with your 1A device, will only reduce the power supply load, extend the life of the power supply, and do not have to worry about damage to your device. Packing Included: 1PCS x 4USB Output Step Down Converter