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This RS232 conversion cable features DB9 9 Pin Female to 3.5mm 1/8 Inch Male plug design, specially made for serial signal conversion and device interconnection. Built with premium shielded wire, it effectively reduces electromagnetic interference and ensures stable RS232 serial data transmission. The 1.8M / 6FT length is suitable for daily office, industrial control, equipment debugging and embedded system connection. Compact and sturdy connectors ensure tight plug-in connection without loose contact. Ideal for connecting serial port devices, configuration tools, industrial controllers and other equipment that need DB9 to 3.5mm interface conversion.