12V 20A 240W Switching Power Supply Driver It is a small power supply, can power a small 3D printer with hot bed, a plotter, laser cutter, or any other CNC, can also be used for LED lighting or general electronics. Features: Great Switching Power Supply for Home Appliances Design with Built-in EMI Filter, Improve Signal Precision. Approvals: 3C/FC/ CE EMC Standards: According with GB9254, EN55022 class A, EN61347-2-13:2008 Standards Certifications: CE & RoHs Meet CEC Energy Efficiency Level IV. Power LED Monitor (LED Glow when in Use) Category – Switch Mode Power Adaptor (SMPS) MTBF >50,000 hours IN-DOOR USE ONLY! This Power Supply Unit “DOES NOT” comes with installation instruction, wiring cable, on/off switch, or screws. Professional installation of qualified electrician is highly recommended. PLEASE NOTE THAT DESIGN AND COLOR MAY CHANGE FROM THE PICTURE SHOWN ABOVE