2Port RJ45 Gigabit Ethernet RJ45 Network Switch Splitter Selector Box 100M/1000M

Industrial 8-port 10/100/1000T 802.3at PoE + 2-port 100/1000X SFP Managed Ethernet Switch - E-link China Technology Co., Ltd.

Navceker 1 Gb RJ45 Splitter Connector Adapter 1 to 2 Ways Lan Ethernet Splitter Gigabit Coupler Connect Laptop Network Cable - AliExpress

What are two different Ethernet ports in a wall? - Quora

Industrial 8-port 10/100/1000T 802.3at PoE + 2-port 100/1000X SFP Managed Ethernet Switch - E-link China Technology Co., Ltd.

8 Port 2.5g Switch with 10g SFP+ Port, 8 x 2.5 Gigabit RJ-45 Base-T Ports, Unman CPK29942

RJ45 Splitter HDmatters Ethernet cable splitter 1 in 2 out Network RJ45 cable Splitter 1 male 2 female out for PC laptop network - AliExpress

Plug & Play: The Kisdoo network selector is not powered by adapter or driver. Just plug and play the device. RJ45/RJ11 Port: RJ45 8P8C

RJ45 Network Switch Selector 2x1 Ethernet RJ45 Network Switch Splitter Selector Box 100M/1000M

12-48V 2 Port 10/100/1000M PoE+1 Port 100/1000M SFP Industrial Gigabit 30W PoE Media Converter - E-link China Technology Co., Ltd.

1Gb RJ45 Splitter Connector Adapter 1 to 2 Ways Lan Ethernet Splitter 1x2 1000Mbps Gigabit Coupler Connect Laptop Network Cable - AliExpress

JSER UTP STP 2 in 1 Out 2 Ports RJ45 LAN CAT6 CAT5E Network Switch Selector Internal External Networking Switcher Splitter Box : Electronics