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Reviews & Guides · Computing & Networking

TP-Link Deco X55: a three-floor installation reached about 400 Mbps upstairs

I installed three TP-Link Deco X55 units for a friend and found setup took about 10 minutes, with roughly 400 Mbps still available on the top floor.

A four-panel photo collage documenting the unboxing and setup of a TP-Link Deco AX3000 Whole Home Mesh Wi-Fi 6 system: the top-left shows the product packaging beside an existing white Huawei modem; the top-right shows the three white cylindrical Deco units lined up together; the bottom-left and bottom-right show individual Deco units placed on a carpeted floor and connected to UK wall power sockets with green status indicator lights glowing at the base.
A TP-Link Deco AX3000 Whole Home Mesh Wi-Fi 6 System box resting on a light wood floor next to an upright white Huawei router with green indicator lights illuminated.
Three white cylindrical Deco mesh Wi-Fi units sitting side by side on a tiled floor with white cables visible behind them.
A white cylindrical TP-Link Deco mesh Wi-Fi router sitting on a carpeted floor next to a white baseboard, connected by a power cable to an adapter plugged into a dual UK wall outlet.
A white cylindrical TP-Link Deco mesh Wi-Fi router sitting on a carpeted floor with a green indicator light glowing underneath. A thin white power cord connects the router to a white power adapter plugged into a dual UK wall socket mounted on a white wall above a baseboard.
A hand holds an accessibility setup card with embossed Braille dots, an printed English guide reading 'This guide is designed for accessibility to ensure a successful setup. Scan the QR code for setup guide. Model: Deco X55', and a QR code, with a smartphone in the background displaying the TP-Link Deco app page on an App Store.

Installer’s Review: Jason sets up a Deco X55 mesh system

This time I used Deco's mesh system. I think it is very easy to use and fast, and setup was also very convenient: both wired and wireless connections could be used, and following the instructions took only 10 minutes to set up all three units.

Test: The friend's home has three floors. The first floor generally reached 500–600 Mbps, while the third floor could still reach around 400 Mbps. Gaming in the bathroom did not mean having to worry about the connection dropping.

Checklist: When you open the package, you will see the card shown in Figure 6. Scan the QR code to download the Deco app, then follow the steps to connect the Deco devices. Connect one Deco to the router with an Ethernet cable, and then you can set your Wi-Fi name and password. After that, place the other units where the Wi-Fi signal starts to weaken, or connect them directly by Ethernet if you have network cables available. Then connect them in the Deco app; they will be on the same network, so you do not have to worry about losing the connection in any corner.

TP-Link Deco X55

Source: Jason · Xiaohongshu · 2026-01-03 · 🇮🇪新年第一件事，给朋友新家连Wifi啦. Search this Chinese title in Xiaohongshu to find the original post.

Before You Buy

Models in your region

The source identifies the installed product as TP-Link Deco X55 in an Irish home. The US Deco X55 belongs to the same product family, but matching firmware, regulatory settings and configuration with the Irish installation remain unconfirmed.

Model in this review Related regional model What to know
TP-Link Deco X55 TP-Link Deco X55 (US) The US Deco X55 is in the same model family as Jason’s Irish system. The official US reference describes it as an AX3000 Wi-Fi 6 mesh system with three Gigabit WAN/LAN auto-sensing ports per unit; exact configuration equivalence with the Irish installation remains unconfirmed.
Model in this review
TP-Link Deco X55
Related regional model
TP-Link Deco X55 (US)
What to know
The US Deco X55 is in the same model family as Jason’s Irish system. The official US reference describes it as an AX3000 Wi-Fi 6 mesh system with three Gigabit WAN/LAN auto-sensing ports per unit; exact configuration equivalence with the Irish installation remains unconfirmed.

What the installation shows

The installation used three Deco units across a three-floor home. Jason says the setup took about 10 minutes and allowed either wired or wireless connections, while his reported speed check found roughly 500–600 Mbps on the first floor and about 400 Mbps on the third. These are useful results for this installation, not a controlled performance test.

Jason’s procedure starts with the Deco app, one Ethernet connection from the router to the first unit, and Wi-Fi name and password setup. The remaining units can be placed where the signal begins to weaken or connected by Ethernet when cabling is available, then added to the same network through the app.

Regional buying checks

For US buyers, the listed Deco X55 is an AX3000 Wi-Fi 6 mesh system with three Gigabit WAN/LAN auto-sensing ports on each unit. That port arrangement supports the wired-backhaul option described by Jason, but identical firmware and regulatory settings for the Irish installation remain unconfirmed.

The source account does not provide a full local retail model suffix, firmware version or controlled test method. Buyers outside the US should therefore confirm the local X55 variant and electrical or regulatory requirements, and treat the 400 Mbps upstairs figure as an installation-specific observation rather than a guaranteed result.

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