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TP-Link TL-SG105 5-Port Unmanaged Desktop Switch

Do you need more ports than your WiFi router provides? Switches can be thought of as Intelligent Ethernet splitters. Intelligent as in they can detect which port is an input/output, they ensure you connect at the highest speed your devices can provide (10/100/1000Mbps), they have a small chipset with dedicated memory to ensure all traffic are forwarded properly to the right devices, etc.



Do not buy "Ethernet splitters" generally; buy a proper switch (like this) instead. "Ethernet splitters" are often not able to handle the complex information exchange needed to create network connections. If you need more Ethernet ports, what you need is an Ethernet switch. Don't believe me? Go onto Amazon and search "Ethernet Splitter" and see the reviews of people unassumingly buying Ethernet splitters, when they should've just bought a switch. Or read this helpful post [superuser.com].



Remember: a 5-port switch (not just from TP-Link, but any brand) means four "downstream" devices can connect with one port as the input (any port can be used as the input in a switch; they're intelligent enough to detect). Just like a normal router has 5 Ethernet ports: one is the "input for internet" and then four ports are "downstream" for your devices (Apple TV, Roku, desktop PC, etc.).
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