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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Navceker 1 Gb RJ45 Splitter 1 to 2 Ethernet Adapter Internet Network Cable Extender RJ45 Connector Coupler for PC TV Box Router
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
BN39-01154L RJ45 LAN Adapter RJ45 NETWORK Ethernet DONGLE For Samsung LED TV WIFI EXTENSION 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).
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2.5G Intel i226 PCIE To RJ45 Network Card 100/1000/2500Mbps RJ45 Interface LAN Etherent Gigabit Adapter For PC/Desktop For Win
Aliexpress UK
Model :USB2.0 RS232 on RJ45. USB serial cable, USB to serial cable, USB console cable. With a built-in CH340 chip, drivers are automatically installed whenever they can connect to the Internet. 1 Adaptive data cable.
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2500Mbps PCI-E To RJ45 Network Card For Intel I226 Gigabit Ethernet rj45 Dual Ports 1000/2500M PCI Express Wlan Adapter Desktop
Aliexpress UK
Connects RS232 female to RJ45 male. Transmit signals between your RS232 ports over CATS, CAT5E, and CAT5 network cables. Transmits signals up to 100FT.
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UGREEN RJ45 Splitter 1 to 2 Ethernet Adapter Internet Network Cable Extender RJ45 Connector Coupler for PC Laptop TV Box Router
Aliexpress UK
UART Interface: 1 RS232, 1 RS485 RS422 Composite Port. Item Type: RS232 RS485 Serial to Ethernet Adapter. 1 x RS232 RS485 Serial to Ethernet Adapter. POWERFUL INDICATOR FUNCTION: With power, Link/act, TX, RX and RS232 five indicators, can intuitively display the working status of the device.
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Vention Cat7 Ethernet Extension Cable RJ45 Cat7/Cat6 Male to Female Rj45 Ethernet Extender Adapter for PC Laptop Ethernet Cable
Aliexpress UK
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1pcs F TV Female Jack to RJ45 Male Plug Coaxial Coax Barrel Coupler Adapter RJ45 to RF Connector
Aliexpress UK
Refurbished of grade a, Possible presence of merely aesthetic defects, which do not affect use, such as small pixels defects (ISO-9241-3xx rules), micrographers on the body and/or other defects not visible to more than 30cm from the object deriving from the wear of the object over time; However, the hardware is tested, functioning and guaranteed (see details of product condition) Purchase invoice: It should be requested at the same time as the order and will be sent by email. In the absence of the billing data, the tax receipt that will not be possible to cancel will be issued. The same is delivered without signature by the Italian Post Office inside the mailbox which, if not present, cannot be delivered, therefore it will go back to the sender. To avoid any inconvenience it is advisable.
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1000Mbps 1 In 2 Out Ethernet Adapter RJ45 Splitter Lan Connector Cat 6 rj45 Splitter Switch Coupler for PC Laptop TV Box Router
Aliexpress UK