If you need Wi-Fi: Adding Wi-Fi to a Powerline kit sounds like a foregone conclusion, but the TP-Link TLA-WPA8631 is expensive and doesn’t perform as well as a MoCA adapter or a Powerline adapter with Ethernet alone. Adding Wi-Fi may add convenience, but it also adds a bit of latency and slows overall speed (throughput) due to Powerline communications, which is slower than a direct Ethernet or MoCA-to-Ethernet connection. Positive aspects include three Ethernet ports on the Wi-Fi adapter, which adds more wired connections at your destination without having to resort to an Ethernet switch. The TLA-WPA8631 also has a pass-through power outlet, which can be handy. As mentioned above, the downside is that the kit is expensive, over $110, and for that price you only get Wi-Fi 5, not Wi-Fi 6 or 6E, which are more modern.