It’s always better to have a wired connection if possible. I use multiple routers/switches in my house to provide the best connection possible in every room I need it.
I have the tools to terminate catX cables so all the cat6 wire they used for phone lines I converted them to rj45 connectors and changed out the phone plates in the rooms.
You can place the modem/router in a central location and still not get good a wifi signal in the garage/back bedroom/lanai. That’s why I use a switch in the white network box so I can hook up other routers around the house by wire to get the best performance. I get max speed I’m paying for in each area of my house because each router is hooked up by a cat6 cable whereas if you hook up a 2nd router by wifi, the best performance you will get from this 2nd router will be degraded to the speed of wifi to the router, let’s just say 1/2 or even less speed than a wired router will get you.
My whole house is automated and needs wifi to my grill outside to my wifi irrigation system in the garage, 2 of the hardest places for wifi to get too.
I did hook up another router above my kitchen cabinets with the cat 6 cable above the refrigerator, this gives me a good wifi signal for my open areas but not in the back bedrooms.
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