A single Ethernet port can support multiple connections via a switch.
A single Ethernet port can support multiple connections via a switch.
The Ethernet cable in the wall likely links to your router. You can link a switch to this port and connect several devices to the switch.
It seems like you're explaining the purpose of a switch. The main connection point for the internet cable should be on the WAN port, while all other connections go elsewhere.
The setup differs because a router and a switch handle data in distinct ways. Using a splitter splits signals from the router, while a switch directs traffic between devices. A single cable connects the router to the splitter, and another to the switch, not both at once. They’re not the same; routers manage network traffic, switches manage device connections.
A switch doesn’t have a port named WAN. A router does. On a switch, every port is identical. When you mention a "splitter," it seems you’re referring to a device that divides a single cable into multiple cables. This is based on the idea that higher-speed connections need more internal cables, so a splitter splits one 1Gbps cable into two 100Mbps ones. It’s generally not recommended unless necessary. A switch increases the number of Ethernet ports available. If you need more than one port, use a switch. A router links one network to another, such as your home network and the internet. If there isn’t a router nearby, it’s likely connected outside your home by your provider or landlord. If you have an Ethernet port in your wall and wish to connect several devices, consider a router or switch for better functionality.