Hi, I would like to operate my Nintendo Switch and my PC with a LAN cable because the router is too far away for a wireless connection. Since I have no desire to draw a second LAN cable in my room I wonder if you can operate two devices with a LAN cable somehow.
For something you need a LAN hub or switch.
Hang a wireless repeater to the LAN cable in the room, then you have a good Wi-Fi signal and can easily use both devices.
You can buy a LAN switch / hub and connect it to the lying LAN cable in your room. Then you can connect as many devices to the LAN switch as these ports have. You need but a few more LAN cables, which then only have to extend from the device to the switch.