power lines should work just need to be plugged directly into wall sockets, a lot of the community recommend using devolo homeplug av1200+ series with pass through, these are bit on the pricey side.. other option would be attach a WAP (Wireless Access Point) onto the hub this will greatly increase the wi-fi range for all devices these can vary greatly in price and speeds some people on the community use Ubiquit Unifi
just stay away from anything that says extenders/repeaters those are horrid devices and will make things slower.
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