networking - Will an Ethernet splitter work? - Super User

I have a room with only one Ethernet cable going there, but I would like to connect two devices on it. Is an Ethernet splitter suitable for that? I am talking about something like this: In theory it

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networking - Does this home-network work using an Ethernet Splitter? - Super User

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How do these Ethernet splitters work? : r/HomeNetworking

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Gigabit Ethernet Splitter 1 to 2 High Speed, 1000Mbps Ethernet Splitter [2 Devices Simultaneous Networking], RJ45 Splitter Adapter with USB Power Cable, Internet Splitter for Cat5/5e/6/7/8 Cable