1. Fully compatible with QC, PD, SCP, VOOC and other fast charging protocols, meeting the charging needs of most electronic devices on the market, and realizing worry-free charging with one board in hand! 2. Support MPPT function, can be connected to solar panels for charging. 3. Efficient buck-boost automatic switching, no need to worry about the battery voltage being too high and damaging the mobile phone, automatic PWM and mode switching to achieve efficient buck-boost. 4. The product supports a variety of protection mechanisms, overcurrent/overvoltage/short circuit/overtemperature protection, and more to use. 5. Not only output fast charging, but also fast charging itself, supporting PD bidirectional fast charging, greatly shortening the self-charging time and improving the convenience of use. Large-capacity solid-state capacitor filtering, low ripple output, C port Vpp as low as 6-9mV, more effective protection of electronic devices Parameters: The motherboard comes with 4 USB