Package : The package includes 1pc DB9 (RS232) female to RJ45 female serial adapter and 1pc DB9 (RS232) male to RJ45 female serial adapter. Helpful : Nick-plated and Oxygen-free copper transmission port on the port minimize crosstalk, suppress noise, and protect against electromagnetic interference (EMI) and radio frequency interference (RFI),Premium adapter engineered with molded strain relief connectors for durability, grip treads for easy plugging and unplugging, and finger-tightened screws for a secure connection. 65.6FT : Connect the equipment serial port to the RJ45 console port on routers, support maximum distance 65.6FT. Compatibility : Compatible with Standard 9 Pin D-sub RS-232 Devices, such as computer, laptop, printer, modem, router, PDA, POS device, digital CNC machine tool, Barcode scanner, etc. Connection : DB9 (RS232) female/male to RJ45 female console adapter for TCP/IP network interface with the doual-way conversion, with the serial port network function, support serial data and network data bi-directional transparent transmission.