Right now I have the modem/router in the attic, where most of the computers are, but i also have a computer in the basement, to get to that computer i have a powerline network adapter with two ethernet ports.
However, there is now a laptop that needs to be connected down there and doesn’t have ethernet, wifi range down there is terrible, i’d like to plug something into the additional ethernet that just outputs the same wifi as upstairs (that way i don’t even have to change wifi connections, and it connects automatically to the best one), what would be the best way to do that?
I hate range extenders with a passion. I’ve never found a setup that performs as well as having proper wifi coverage.
Ideally, you’d instead run a cable and set up an additional wireless access point (see that other comment for details).
If that’s not possible, I’d go Ethernet over Power before I stooped to using a range extender.
As a footnote, the network I have at home didn’t cost that much, but it’s miles better than anything my ISP provided. I turned off wifi in my ISP router, and connected a PoE switch. To this switch I then connected four Aruba InstandOn AP22. Due to occupational damage, I tend to shy away from consumer-grade networking gear, but I have no regrets regarding this setup. If all goes as planned, I’ll replace my shitty ISP tomorrow with a proper rackmounted router.