LogFAQs > #922977839

Depends on what you're trying to do. But honestly, as long as you don't have a shitty router, there's no reason you shouldn't be able to run on wifi unless your walls are lined with lead. You can't use two separate modems for the same internet connection without two different services.

Although, I would guess there's some sort of ethernet over coax thing. I've never heard of it, but I've never been in a position where its necessary.
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I promise that if the game stinks I will make a topic about how I hate it and you can all laugh at me - Mead on Fallout 76