Support a variety of fast charging protocols: PD3.0/2.0, PPS/QC4 +, QC3.0/2.0, FCP, AFC Fourth, remind you: 1. Mobile phone chargers/charging treasures must first support fast charging such as PD/QC in order to deceive the fast charging voltage. 2. Fix the four gears of 9/12/15/20 volts, what voltage is needed, just short the corresponding pads. 3. For example, if you set the decoy to 20 volts, but your charger is only up to 9 volts, it will automatically downshift to deceive the output to 9 volts. 4. The maximum support is 5A, and the actual output current/power is determined by your fast charging charger and load.