Next thing to a direct connection!
I was having trouble with Wi-Fi reaching my Roku box in a far corner of the house, and wireless 'range extenders' did little to help the situation. A friend recommended a PLC (Power Line Carrier) approach and I found this pair of TP-Link units on eBay at a virtual giveaway price. I just plugged them in and they found each other instantly, and now the Roku performs as if it's wired directly to a LAN port on the router. I got a second pair and used one as a Wi-Fi alternative or backup to my main computer, and was able to add it to the PLC 'network' with no problems. It does not seem to matter which leg of the AC mains these are on, they give a solid connection even with all the motors, light dimmers, etc. that generate noise. Very impressive!
Verified purchase: YesCondition: Refurbished