DURABLE: Pure copper plated joints, fine solder joints, resistance to plug, and good contact to ensure high-quality, durability and a long life. Stable Transmission: This DB9 Solderless Breakout Connector adopts 24AWG double-layer shielded cable and copper crimp terminals, which has stable signal transmission and good shielding effect. DB9 line sequence color comparison table: 1-black, 2-brown, 3-red, 4-orange, 5-yellow, 6-green, 7-blue, 8-purple, 9-grey Zinc Alloy Metal Shell: Anti-pressure; Anti-intreference; Anti-high temperature. WIDELY APPLICATIONS: It can connect all kinds of rs232/rs485 and other communication protocols devices. Such as computer and tax control machine, digital camera, PLC, PDA, MODEM, set-top box, barcode machine, industrial instrumentation and other equipment for communication.