Adjustable Power SupplyInput: AC 100~240V, 50/60Hz; Output: DC 3~24V Adjustable, Max 3A, 72W. The variable voltage is easy to select. You can easily obtain the voltage you want by turning the button, such as 3V 3.5V 4V 4.5V 5V 6V 7.5V 9V 12V 15V 18V 19V 20V 24V. The voltage should not exceed 3A, otherwise the power supply will be damaged. Upgraded Variable Power SupplyBuilt-in protruding rotatable button for adjusting the voltage suitable for your device, the LED displays real-time voltage, which helps you control real-time condition of charging. The power supply built-in multiple safety protection systems:Automatic over voltage cut-off, over current cut-off,over temperature cut-off,short circuit cut-off, safe to use. 14 Plugs DC TipsEquipped with 14 frequently used plugs: Micro-USB, Type-C, DC terminal connector, 6.4x4.0mm+Pin, 5.5x2.1mm, 5.0x3.0mm+Pin, 5.0x2.5mm, 6.3x3.0mm, 5.5x1.7mm, 4.8x1.7mm, 4.0x1.7mm, 3.5x1.35mm, 3.0x1.1mm, 2.5x0.7mm. Univer