HIGH QUALITY AND DURABLE: Pure copper plated joints, fine solder joints, resistance to plugging and good contact to ensure high quality, 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.