AND DURABLE: Pure copper plated joints, fine solder joints, resistance to plugging and good contact to ensure , durability and long service life. The outer shell is made of environmentally friendly PP material, which is soft and durable. EASY TO USE: No welding required, 128 environmental protection copper terminal design, no need soldering iron and cumbersome tools, easy wiring. The case is equipped with a folding clasp that allows for easy assembly and disassembly without tools. HIGH COMPATIBILITY: All types of serial devices can be connected. Such as computer and control control machine, digital camera, PLC, PDA, MODEM, set-top box, barcode machine, industrial instruments and other communication equipment. HOMMING: Each product set is equipped with a set of cable press plate to create a to prevent easy removal of the connected wires. Shell with non-slip design. INTUITIVE: All signal connectors are clearly named and labeled on both sides of the board for quick wiring. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.