Note: Ensure the device's rated input voltage matches the selected voltage; do not use high voltage for low voltage devices. Use a PD charger/power bank with rated power greater than the device's actual requirement, with at least 20% margin. Confirm the DC connector size matches the device interface. Connect the Type-C end to the PD power source first, then switch to the appropriate voltage, and finally connect the device. The charger/power bank must support PD fast charging protocol.