
This set of 5 male DC Plug adapters with dimensions of 5.5mm x 2.1mm extend to a terminal block, making it easy for you to attach wires. These adapters offer a lot of freedom to connect your system to its own power supply. The inputs of the terminal block are clearly labeled with a '+' and a '-', based on the fact that the center of the DC plug is positive. This makes it easy to maintain the correct polarity and ensures a safe and reliable power supply for your various electronic projects.