Printed circuit boards (PCB) are devices that serve as a mechanical support and electrical connection point for various electronic components, used for nearly all modern electronic products. Printed circuit boards may feature a number of added peripherals and connectors that aid in the overall functionality of the system, each serving a unique role providing features that benefit the assembly. The edge connector is a common addition to a printed circuit board, serving as a component that mates with the PCB in order to provide an external electrical connection. As a component that is regularly found on PCBs for defining the power specifications of peripherals, it can be useful to understand their design and use.