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Deco m4 set from TpLink - connecting three devices with a cable to the router

k0k0s1995 15042 12
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  • #1 19346172
    k0k0s1995
    Level 2  
    Posts: 3
    Hello, I am planning to buy a Deco m4 set - three devices from Tplink.
    I want each device to be connected by cable to the router (a lot of square footage to cover).
    Is it realistic for each device to send the maximum speed, i.e. work using a connection of 3 devices - 3 slots in the router?
    I don't want it to distribute WiFi coverage between devices.
    Regards.
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  • #3 19346269
    Anonymous
    Level 1  
  • #4 19347855
    k0k0s1995
    Level 2  
    Posts: 3
    Thank you for your help!
  • #5 19347904
    safbot1st
    Level 43  
    Posts: 21951
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    k0k0s1995 wrote:
    Is it realistic for each device to send the maximum speed, i.e. work using a connection of 3 devices - 3 slots in the router?
    I don't want it to spread WiFi coverage between devices.

    The main advantage of the set is the mesh system.
    I don't understand why you want to have 3 wires to trip over.
    The description shows that the system is efficient, and thanks to wireless connection you can easily increase the total network range:
    https://www.komputronik.pl/informacje/co-to-j...QM9--2_H5xWbhPG7leQcJJA6muKQnWiNcEkaAqrxEALw_ wcB
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  • #6 19347912
    jimasek
    VIP Meritorious for electroda.pl
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    If your friend has the cables distributed, there is nothing to worry about, just AP. It will definitely be more stable and faster than mesh.
  • #7 19347926
    safbot1st
    Level 43  
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    jimasek wrote:
    If your friend has the cables distributed

    Unless so...
  • #8 19348097
    jprzedworski
    Network and Internet specialist
    Posts: 5353
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    safbot1st wrote:
    The description shows that the system is efficient
    Miracles may result from descriptions. What matters is the specific location and the specific case. It's enough to have neighbors with Wi-Fi, and there may be disruptions and problems.
  • #9 19348746
    IC_Current
    Network and Internet specialist
    Posts: 9096
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    safbot1st wrote:
    The main advantage of the set is the mesh system.
    I don't understand why you want to have 3 wires to trip over.

    Because connecting stations via radio when you have wires at your disposal is usually a mess and asking for trouble.

    @author
    Deco can be easily connected with cables. It works very nicely. However, this whole "Mesh" must remain turned on anyway, because it is nothing more than activating fast roaming and definitely makes switching clients easier. After connecting the cables, the system chooses whether it uses a repeater or a cable for mutual communication.

    And for marketing enthusiasts: This big marketing push of "Mesh" from what I noticed is usually repeaters, which many people are fed up with. The devices I checked have only one radio and work like ordinary repeaters (with all their disadvantages), except that they have fast roaming and a central management console. If you don't connect it with a cable, forget about efficient operation.
    Helpful post? Buy me a coffee.
  • #10 20456403
    rolfzrybnika
    Level 2  
    Posts: 2
    Rate: 1
    Hello, I have a question for the author of the topic - because I also plan to do something similar (I have cables at home) - in addition to the deco m4 set (three elements), do you have a router separately as the fourth element? Or can one of these three elements already function as a router (with a cable from the Internet provider connected), and nothing else is needed for the set to work?
  • #11 20456408
    IC_Current
    Network and Internet specialist
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    M4 can work as an AP + router from another provider, or you can use one M4 as a router with AP and the other two as AP.
    Helpful post? Buy me a coffee.
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  • #12 20577070
    piskozaa
    Level 4  
    Posts: 16
    Rate: 2
    If I connect 3x Deco M4 RJs to the router and set it to AP mode, will the WiFi network spread by each Deco have the same name (or will it be a typical mesh)? What I mean is that if I have a three-story house, I would like to place one deco on each floor and I would like the phone or other device to see one Wi-Fi network when passing between floors.
  • #13 20578920
    IC_Current
    Network and Internet specialist
    Posts: 9096
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    piskozaa wrote:
    What I mean is that if I have a three-story house, I would like to place one deco on each floor and I would like the phone or other device to see one Wi-Fi network when passing between floors.

    This is how it will work.
    Helpful post? Buy me a coffee.

Topic summary

✨ The discussion revolves around the feasibility of connecting three TP-Link Deco M4 devices directly to a router via Ethernet cables, aiming to maximize speed and coverage without relying on Wi-Fi distribution. Users confirm that Deco M4 can operate in Access Point (AP) mode, allowing for stable connections when wired. It is noted that while the mesh system enhances network efficiency, using wired connections is preferable for stability. The Deco M4 can function as a router or AP, and when set up correctly, all devices can share the same Wi-Fi network name, facilitating seamless connectivity across multiple floors.
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FAQ

TL;DR: Deco M4 supports 1 router + 2 APs or all‑AP setups; "M4 can work as an AP + router." This FAQ helps home users wire three Decos for stable, seamless coverage. [Elektroda, IC_Current, post #20456408]

Why it matters: It shows how to cable and configure Deco M4 for reliable coverage and smooth roaming in multi‑room or multi‑floor homes.

Quick Facts

Can I connect three Deco M4 units by Ethernet to my router for top speed?

Yes. Cable each Deco to your router to create a wired backhaul. Leave Mesh enabled to keep fast roaming. After you connect the cables, Deco automatically uses Ethernet between nodes. This avoids repeater bottlenecks and improves stability. Three wired units suit large spaces well. [Elektroda, IC_Current, post #19348746]

Does the Deco M4 have AP mode (Access Point mode)?

Yes. Deco M4 supports two modes: Mesh or AP. “Deco has two modes: 1. MESH 2.AP.” Choose AP when you want Decos to act as access points behind a router. [Elektroda, Anonymous, post #19346269]

How do I set up three M4s as wired APs and keep roaming?

  1. Leave Mesh enabled so fast roaming stays active.
  2. Connect each Deco to your router or switch with Ethernet.
  3. Let Deco auto-select the wired backhaul; then place units for best coverage. “Mesh must remain turned on anyway... and makes switching clients easier.” [Elektroda, IC_Current, post #19348746]

Will my phone see one Wi‑Fi name across floors in AP mode?

Yes. With three Decos set to AP mode and cabled to your router, they present one SSID. Devices roam between floors seamlessly in a three‑story home. “This is how it will work.” [Elektroda, IC_Current, post #20578920]

Do I need a separate router, or can one Deco M4 be the main router?

Either works. You can run M4s as APs behind your provider’s router, or use one M4 as the router and two as APs. “M4 can work as an AP + router.” [Elektroda, IC_Current, post #20456408]

Wired vs wireless backhaul: which should I choose if I have Ethernet?

Choose wired. Ethernet backhaul increases stability and effective throughput compared with pure wireless mesh. As one expert put it, “It will definitely be more stable and faster than mesh.” [Elektroda, jimasek, post #19347912]

Can I mix wired and wireless links between Decos?

Yes. Wire the units you can, and leave others wireless if needed. After you connect cables, Deco selects whether to use the wired or repeater link for inter‑node traffic automatically. This allows hybrid layouts. [Elektroda, IC_Current, post #19348746]

Will neighbor Wi‑Fi cause drops if I rely on wireless mesh?

It can. “It’s enough to have neighbors with Wi‑Fi, and there may be disruptions and problems.” Cabling your Decos reduces interference risk and stabilizes backhaul. Wired APs shine in congested environments. [Elektroda, jprzedworski, post #19348097]

Does wiring disable Mesh features like fast roaming?

No. Keep Mesh enabled even when everything is cabled. “This whole ‘Mesh’ must remain turned on anyway,” which activates fast roaming and eases client switching. You get roaming plus wired stability. [Elektroda, IC_Current, post #19348746]

Can each Deco be plugged into a different LAN port on my router?

Yes. You can connect multiple Decos by Ethernet to your router. The system will prefer the wired path for inter‑node communication once links are up. This is the recommended approach when ports are available. [Elektroda, IC_Current, post #19348746]

I don’t want Wi‑Fi coverage to be “split”—will cabled Decos deliver full performance?

With Ethernet backhaul, each AP has a full‑speed upstream link to the router. Clients roam between nodes while maintaining solid throughput. Avoid pure repeater mode because single‑radio repeaters share airtime and reduce efficiency. Wiring removes that penalty. [Elektroda, IC_Current, post #19348746]

What’s a simple layout for a three‑floor home with Deco M4?

Place one Deco per floor, set AP mode, and wire each to the router. Use a single SSID for all units. Your phone will see one network and roam smoothly between floors. “This is how it will work.” [Elektroda, IC_Current, post #20578920]
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