Features:With protection function: reverse polarity protection, over -current and over- temperature protection.Wiring mode is DC 5.5/2.1, terminals is non- soldering, so is convenient to install.Application in mobile power, mobile phone, tablet computers, recorders and other USB 5V power supply equipment.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-60VOutput: DC 5V / 5AEfficiency: 95% (maximum)Module Size: 6.3 x 5 x 3cm/2.4 x 1.9 x1.1inchWorking Temperature: -40 ~ +85Load Capacity: 5AWiring: DC 5.5/2.1USB1: QC2.0 Automatic Identification 5V2A portUSB2: QC2.0 Automatic Identification 5V1A portUSB3: D+ D- shorting is compatible with most devicesUSB4: D+ D- shorting is compatible with most devicesPacking Included:1PCS x 4USB Output Step Down ConverterNote: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..