Yes, you can connect your Ethernet powerline adapter to a router.
Yes, you can connect your Ethernet powerline adapter to a router.
I shared a drawing to clarify my situation. I needed an Ethernet connection for PC gaming but didn’t want the cable running throughout the house. I chose a powerline adapter and it worked well until our ISP upgraded to fiber. The new modem has a shorter range, and the Wi-Fi barely reaches my room, causing issues with my phone, switch, and TV. I’m wondering if placing a router on the powerline could fix the Wi-Fi problem or if I should keep my phone outside and use an Ethernet switch for other devices.
Can you relocate the modem to a more central location? If not, keep it where it is and install a second router as an access point and switch in your room. (Avoid having two routers act like routers, as that can become confusing quickly.) Modem → Router → Powerline → Router-as-switch/AP → Your devices
The adapter functions like an Ethernet link, which means it should be possible in principle. But I haven’t tested connecting a router over power lines before. Usually you need both a router and a modem unless they’re combined in one device. You might want to upgrade your existing router or use an AP that supports powerline communication.
The distinction between an access point and a router isn't always clear, but generally an access point connects devices to a network, while a router manages traffic between networks. Your modem/router combo likely handles both functions in one device.
A router handles network address translation, assigns IP addresses, and controls data flow. Essentially, the LAN side of a router operates as its own isolated network segment. Placing another router behind one creates "double NAT," which adds unnecessary complexity. (Think of needing to forward your own device’s traffic through multiple routers inside your home.) Basic switches allow Ethernet ports to communicate directly without routing decisions. Advanced managed switches offer some routing capabilities, but those are usually not necessary for small home setups. An access point manages connections between wired devices and Wi-Fi, functioning similarly to an unmanaged switch except it uses wireless signals. Some routers can combine a switch function with an integrated access point, which is ideal when purchasing a second router.
Sure, I can suggest some routers that include access point features.