Overcurrent protection, overvoltage protection, voltage stabilization protection, short circuit protection. Safety protection, anti-rust and anti-corrosion, input voltage switch. Aluminum shell material, high-strength heat dissipation. Voltage debugging. Highly intelligent protection, double-hat base insurance tube. Name: Electronic Display Power Supply Voltage: 5V 200W Color: Silver Material: Metal Package Contents: 4 x Power Supply Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.