Networking guide
MoCA Adapter Setup: How I Used Coax for Ethernet
My first MoCA setup used ScreenBeam adapters and existing coax to connect a Deco satellite and a group of smart-home hubs. The benefit was bringing a wired connection to rooms that lacked Ethernet.
The main takeaway
The coax route made a useful backhaul and let me place hubs away from the network closet. Verify the cabling and adapter requirements before assuming every wall socket will work.
Best for
Homeowners investigating wired connections, local transfers and a stronger backbone.
Before you start
This adapts my original video and test. Check current specifications, firmware support and prices before buying older equipment.
Original video
2022-11-05
Focus
MoCA adapter setup
Article type
Practical guide
What helps
- Existing coax used for a LAN connection
- Deco backhaul improved in the demonstration
- A remote switch served several smart-home hubs
What to know
- Adapters need power and a compatible coax path
- Splitters and shared services need checking
- No guaranteed speed increase for another home
What I installed
In the November 2022 video I used a ScreenBeam starter kit with an adapter at each end of the coax route. One connects by Ethernet to the home network and the other provides Ethernet in the destination room. I showed the included cables and power accessories before installing them. MoCA carries LAN traffic over suitable coax; it doesn't turn the coax socket into a new internet service by itself.
Connecting the first end to the network
In the closet, my router and switch supplied the Ethernet connection to the first adapter. The coax then linked toward the room I wanted to reach. Confirm the actual wiring route and use compatible components, following the adapter maker's guidance for splitters, filters and coexistence with other services. A room label is useful, but it doesn't establish that an entire coax installation is appropriate without checking it.
The Deco satellite result
At the far side, I connected the adapter's Ethernet to the Deco node and gave the system time to recognize the backhaul. The before-and-after demonstration showed a large improvement, including more than double the earlier download result. That comparison describes this test, where the wireless route had been a limitation. It isn't a guaranteed multiplier for a system whose original wireless connection is already strong.
A second use: moving the smart-home hubs
I also connected a switch in another room so Philips Hue, Lutron and SmartThings equipment didn't all have to sit in the closet. That made placement more flexible while sharing the same uplink. The later MoCA 2.5 article goes further into local speed tests and endpoint bottlenecks. This earlier walkthrough is most useful for seeing how the adapters, coax and room-side equipment fit together physically.
Technical references
More networking guides and reviews
Ethernet Over Coax: My MoCA Setup and Speed TestEthernet Backhaul for Mesh Wi-Fi: My Before-and-After TestTP-Link Deco XE75 Pro: My Wi-Fi 6E Mesh UpgradeCommon questions
Can MoCA connect more than one room-side device?
A room-side switch can serve several devices, which then share the uplink's capacity.
Is this the same test as the newer MoCA 2.5 video?
No. This is the original 2022 setup; the later article covers a separate local-performance experiment.
Watch the full walkthrough