DB9 connector is used to connect the interface with serial port network function and support serial port data and transparent transmission. Compatible with the connection of standard DB9 serial port equipment such as notebook desktop computer, digital machine tool, PDA, bar code machine and instrument, with stable signal transmission and reliable performance | The DB9 serial connector adopts gold joints plating, fine solder joints, resistance to plug, and good contact to ensure high-quality, durability and a long life.effectively reduces the attenuation value, and the signal transmission is more efficient and stable | DB9 RS232 serial port highly compatible with a variety of computer systems, such as Windows XP, Windows Vista, Win, Win 8 and win 10, compatible with Mac OS or later, Linux 2.4.0 and later | DB9 9-Pin serial port network converter the use of full copper core, aluminum foil shielding and braided network shielding can effectively prevent the interference of external signals and make the data transmission more safe and stable | DB9 adapter adopts environment-friendly insulated terminal block, which does not need to be welded. It can be tightened with a screwdriver, and the wiring is firm and reliable. The pin is made of copper sheet, with large transmission resistance and can withstand about 3A current