This modular adapter has a DB9 female connector that plugs into DB9 RS232 serial port and converts it to an RJ45 connection. These modular adapters convert from a DB9 to an RJ45 socket jack (female).
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USB C 3.1 To RJ45 Console Cable FTDI Chip Serial Wire RS232 For Cisco Router RJ 45 Converter Switch Line Type-C Extension Cables
Aliexpress UK
This modular adapter has a DB9 female connector that plugs into DB9 RS232 serial port and converts it to an RJ45 connection. These modular adapters convert from a DB9 to an RJ45 socket jack (female).
eBay
USB Serial Communication Cable for Easun Solar Inver ,USB RS232 Serial to RJ45 8P8C Communication Cable
Aliexpress UK
This modular adapter has a DB9 female connector that plugs into DB9 RS232 serial port and converts it to an RJ45 connection. These modular adapters convert from a DB9 to an RJ45 socket jack (female).
eBay
Debug Cable USB RS232 to RJ45 8P8C Serial for US2000C US3000C US5000 Lithium Battery Console Communication withProlific PL2303GT
Aliexpress UK
This modular adapter has a DB9 female connector that plugs into DB9 RS232 serial port and converts it to an RJ45 connection. These modular adapters convert from a DB9 to an RJ45 socket jack (female).
eBay
ZoeRax Cat6A Cat7 Cable Extender Junction Adapter RJ45 Connector Box RJ45 Lan Cable Extension Connector Full Shielded Toolless
Aliexpress UK
Connection: DB9 (RS232) Female 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. 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. 65.6FT: Connect the equipment serial port to the RJ45 console port on routers, support maximum distance 65.6FT. 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 engineer.
eBay
1000Mbps Rj45 Splitter 1 to 2 Gigabit Ethernet Adapter Internet Network Cable Extender Rj45 Connector For TV Box Router Sharer
Aliexpress UK
Built-in FTDI chip, as long as you can connect to the Internet, it will automatically install the driver. (Huawei H3-S1500 series is not supported,). Type: USB2.0 RS232 to RJ45. USB Serial Cable, USB to Serial Cable, USB CONSOLE Cable.
eBay
100PCS/LOT Metal Shield RJ45 RJ45 8P8C Network CAT5 CAT5E CAT6 CAT6A Modular Plug Connector Cable Adapter Connector Head
Aliexpress UK
This modular adapter has a DB9 female connector that plugs into DB9 RS232 serial port and converts it to an RJ45 connection. These modular adapters convert from a DB9 to an RJ45 socket jack (female).
eBay
RJ45 CAT6 CAT5e Adapter Cap Ethernet Network Cable Connector Plugs RJ45 Caps Cat 5 CAT6 Protective Sleeve Multicolour
Aliexpress UK
This modular adapter has a DB9 female connector that plugs into DB9 RS232 serial port and converts it to an RJ45 connection. These modular adapters convert from a DB9 to an RJ45 socket jack (female).
eBay
RJ45 Splitter 1 To 2 Ethernet Adapter Internet Network Cable Extender RJ45 Connector RJ 45 Coupler For PC Laptop TV Box Router
Aliexpress UK