OP, here. with Ryan's help, I have picked a solution that worked for me. I am listing in case this helps some future person. My router is 57 feet from one end of the house. Signal at that end is a...

Thanks.

@Ryan Can I plug a wireless access point in to the end powerline adapter?

Router closet is pretty tight. No available wall plugs. I have wifi and wired ethernet in most of my house. Could I plug a powerline adapter (base unit) into one of those ethernet ports in another...

Thank you for replying so quickly. I understand all of your recommendations except one part of the powerline adapter one. Is the term "breaker panel" the same thing as what I call a "circuit breaker...

Standing right next to my TP-Link AX21 router Hardware version 4.6, my cell phone gets 112 Mbps, which is wonderful considering my ISP's stated speed. I am connecting to the 5ghz network. 45 feet...