In scenarios where flexible wiring is required, the male elbow of the 4Pin molded M5 connector demonstrates its advantages. The outer shell is made of plastic materials with certain strength and wear resistance, which can meet the daily protection needs. The internal pins are selected from metal materials that can cope with certain temperature changes and possess basic anti-fatigue properties. Through standard forging and basic surface treatment, the basic mechanical strength and electrical conductivity are ensured. The design of the elbow is based on practical spatial geometry principles. The common bending angles, such as 90 degrees, are precisely formed, which can avoid most of the ordinary obstacles inside the chassis. Meanwhile, the simple internal wiring structure is optimized to minimize the impact on signals at the bent parts. It provides convenience for the wiring connection in the limited space of small electronic devices, common vehicle accessories and so on, and helps to build the basic electronic architecture in a flexible manner.