This product is a QC2.0, QC3.0 fast charging module, wide application range, with protection, easy to use, high conversion efficiency, wide input voltage range. Can be used for car charging transformation, car recorder power supply, household power supply, Intelligent power strip transformation, fast charging adapter, etc. parameter: Input voltage range: 6V-32V Output voltage: default 5V, after triggering fast charge, it will automatically adjust between 3-12V Output power: 24W (5V@3.4A, 9V@2.5A, 12V@2A, etc.) Conversion efficiency: 90%-97% Output voltage cable compensation function Input protection: input overvoltage, undervoltage, and overcurrent protection Output protection: over current, short circuit protection Whole machine over temperature protection Switching frequency: 220Khz Support fast charge protocol: Support DCP protocol, BC1.2, Appe, protocol Support fast charge protocol /SCP, Support Spreadtrum fast charge protocol SFCP Support Qualcomm QC2.0 and 3.0 Support MTK PE1.1/PE2.0 Colour:As shown in color Material:PCB Package Contents: 1 * 4 Port Charging Module Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.