General description This 3V-36V 4A 144W Universal Power Supply is designed for a wide range of electronic devices, providing adjustable output voltage from 3V to 36V. It features a user-friendly knob for voltage adjustment and a built-in LED display to show the output voltage. The power supply is equipped with multiple safety protection systems to ensure safe operation. Technical specifications Input: AC 100~240V, 50/60Hz Output: DC 3~36V Adjustable Max Current: 4A Max Power: 144W Dimensions: 5.5x2.5mm tip Weight: Not specified Compatibility and accessories Compatible with various electronic devices including LED strips, 3D printers, TV boxes, smart speakers, wireless routers, and more. Includes 14 frequently used tips: 6.5x4.4mm+Pin, 5.5x2.1mm, 5.5x3.0mm+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, Micro-USB, Type-C, and DC terminal connector. Package includes: 1 x 3~36V 144W universal adapter, 14 x DC tips, 1 x reverse polarity