<p>High quality and durability: pure copper electroplating joint, fine welding joint, plug resistance, good contact, high quality, durability and . The shell is made of environment-friendly PP engineering material, soft and durable.</p> <p>Easy to use: no welding, 128 environment-friendly copper terminal design, no soldering iron and heavy tools, simple wiring. The shell is designed with folding buckle, which can be easily assembled and disassembled without tools.</p> <p>High compatibility: It can connect serial devices. Such as computer and tax control computer, digital camera, PLC, PDA, MODEM, set-top box, barcode machine, industrial instrument and other communication equipment.</p> <p>Humanization: Each set of products is equipped with a set of cable pressing plate to prevent the connected wires from falling off easily; The shell adopts anti- design.</p> <p>Intuitive: all signal ports have clear names, and labels are pasted on both sides of the board for quick wiring.</p> <p>Colour:black</p> <p>Material:plastic</p> <p>Package Contents:</p> <p>4 x db9 connector</p> <p>Only the above package content, other products are not included.</p> <p>Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.</p>