Does a router always need to be used to turn on a splitter

Yes, an Ethernet splitter requires a source device such as a router or switch to function, as it cannot generate or manage a network signal on its own.How Ethernet Splitters WorkAn Ethernet splitter is a passive device that allows two Ethernet signals to travel over a single cable by using unused wire pairs inside the cable. It does not multiply or create a network signal, nor can it assign IP addresses or manage traffic between devices . To operate correctly, splitters must be used in pairs: one at the source end and one at the destination end . Without a source device like a router or switch providing the initial Ethernet connection, the splitter has no signal to distribute.Limitations of SplittersSplitters only work with 10/100 Mbps networks and are not compatible with Gigabit Ethernet, which uses all eight wires in a cable .They do not allow simultaneous full-speed access for multiple devices; bandwidth is shared between connected devices .Splitters cannot differentiate between devices, so only one device may effectively use the connection at a time in some setups .AlternativesFor modern networks or situations requiring multiple devices with simultaneous access, an Ethernet switch is recommended. Switches actively manage traffic, support higher speeds, and allow multiple devices to connect efficiently . Unlike splitters, switches require power and can handle Gigabit connections, making them a more reliable solution for home or office networks.Practical SetupTo use a splitter, you need:A router or switch as the source device.Two splitters: one at the source and one at the destination.Ethernet cables connecting the router to the first splitter, the splitters to each other, and the second splitter to the target devices . In summary, a router or switch is always necessary for a splitter to function because the splitter itself cannot provide or manage a network signal. For better performance and simultaneous device usage, a switch is generally a superior choice.