ITEM NAME:QC3.0 USB DC-DC Buck Converter Fast Charging Step Down Module Circuit Board Product Description Description: QC3.0 QC2.0 USB DC-DC Buck Converter Charging Step Down Module 6-32V 9V 12V 24V to Fast Quick Charger Circuit Board 3V 5V 12V Features: Supporting multiple fast charging protocols. Input Overvoltage and Undervoltage Protection. Input protection. Overcurrent and Short Circuit. Specifications: Voltage range input: 6 V to 32 V Output Voltage: The default value is 5 V. After fast charging is activated, it will automatically adjust 3 to 12 V. Conversion efficiency: 90% to 97%. Purpose: Charging power adapter Material: Plastic Shell Size: 45*20*5mm/1.77*0.79*0.2" Notes: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! 2. Please allow slight measuring deviation due to manual measurement. Included: 1 X Module.Overcurrent and Short Circuit. Purpose: Charging power adapter. Supporting multiple fast charging protocols. Included: 1 X Module. Material: Plastic Shell. Input protection. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures.