Lab – Where did the 6GHz band from the Deco XE75, TP-Link’s 6E mesh wifi system, go?

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TP-Link’s 6E Deco XE75 mesh wifi system just arrived in the lab, but after installation, surprise: no 6GHz frequency band! TP-Link plays us sleight of hand. explanations.

TP-Link Deco XE75



  • everybody
  • pack of 1
  • 2 pack
  • 3 packs
  • everybody
  • pack of 1
  • 2 pack
  • 3 packs
  • AmazonAmazon

    402.35

  • Darty MarketDarty Market

    461.50

  • Amazon marketAmazon market

    550.44

  • AmazonAmazon

    559.99

  • Amazon marketAmazon market

    581.79

  • Darty MarketDarty Market

    611.41

  • AmazonAmazon

    402.35

  • Darty MarketDarty Market

    461.50

  • Amazon marketAmazon market

    550.44

  • AmazonAmazon

    559.99

  • Amazon marketAmazon market

    581.79

  • Darty MarketDarty Market

    611.41

  • Amazon marketAmazon market

    682.88

  • Amazon marketAmazon market

    736.97

How does the pricing table work?

Currently under testing, TP-Link’s 6E Deco XE75 wifi network system has three frequency bands: 2.4GHz, 5GHz and 6GHz. It is the presence of this 6 GHz band, among other things, that allows the Deco XE75 to comply with the 6E wifi standard. However, after installation and configuration, it remains invisible to our standard compliant devices.
You have to go to the wifi options of the Deco app to see where the 6GHz frequency band went for the Deco XE75. In the options, the 6GHz band is by default in “Dedicated Connection”. Which means TP-Link has reserved it for exclusive communication between its network system units, and it’s invisible to our compatible devices.

TP-Link Deco XE75 6GHz Option

The option is well hidden in the app.

© The Digital

As a reminder, the delivery network – or the “plug network” to our Canadian friends – is an intermediate network that allows communication between units. It can be on the same frequency band as wifi, in which case the available bandwidth of devices is halved when connected to satellite units. Via cable (ethernet connection), all units are connected to an ethernet cable, thus freeing up wifi bandwidth for connected devices or over a dedicated wifi band as in high-end tri-band or quad-band network kits, for example on the Netgear Orbi RBKE963 which we were able to test.

In the case of the Deco XE75, TP-Link offers the ability to make modular reconnection with the 6GHz band or make the 6GHz band available to devices, but in this case, each band performs its own uplinks thus theoretically halving the bandwidth available to devices . So there are two possibilities for the user: Either keep the original configuration, especially if you don’t have 6E wifi compatible devices, or activate the 6GHz band if you have 6E wifi devices and your environment is saturated with 5GHz wifi.

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Bandwidth 6GHz 5GHz Ethernet backhaul Deco XE75 TP-Link

Speeds displayed on the 5 GHz frequency band depending on the supply network.

© The Digital

Thus, depending on the choice of connection type, performance on so-called “satellite” modules may vary. Regarding the Deco XE75, when the jumper is provided by a gigabit cable link, we reach an average download speed of 865 MB/s and 775 MB/s upload during our file transfers. In this case, it is not uncommon to reach the practical limit of Gigabit with a peak of 114 Mbit / s, that is, 912 Mbit / s. If the backhaul is provided exclusively through the 6 GHz frequency band, our satellite unit goes to 826 Mbit / s in download and 547 Mbit / s in upload. Finally, if we remove the 6GHz frequency band for the backlink, the satellite speeds will be 539Mbit/s in downloading and 509Mbit/s in upload. Thus the logic is respected, and the connection by Ethernet cable proves to be faster and more stable. It guarantees a frequency range of 6GHz, but provides lower speeds than cable. And, as expected, without the dedicated jumpers, performance drops roughly in half, well around the corner, since the Gigabit port is restricted if connected to an Ethernet network, as we’ll explain in the full test.

You will soon be able to find the complete test of the 6E Deco XE75 mesh wifi system from TP-Link.

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