Almost every week someone comes in and tells us their internet is brilliant in the living room and completely useless in the bedroom, the kitchen extension, or the converted outbuilding they now work from. Nine times out of ten, the broadband itself is fine. The router is fine. The problem is simply distance — and the walls in between.

The usual advice is "buy a Wi-Fi extender." And, honestly, most Wi-Fi extenders are a bit rubbish. They repeat your existing signal, cutting the speed roughly in half, and they create a separate network your devices don't switch between gracefully. You end up standing in the hallway with your phone showing full bars on the old network while the laptop in the next room crawls along.

A mesh Wi-Fi node is a smarter answer — and one in particular stands out for home users and small businesses who want something that simply works: the TP-Link Deco XE75 (single-node add-on, around £65).

What is mesh Wi-Fi, and why does it matter?

A mesh system replaces or supplements your router with two or more units that all share the same network name and talk to each other intelligently. Your phone, laptop, or tablet moves between them seamlessly — you don't notice, you don't reconnect, the signal just stays strong.

TP-Link's Deco range is one of the most established mesh systems on the market, and the XE75 is their mid-range Wi-Fi 6E model — meaning it supports the newer 6 GHz radio band that's far less congested than the old 2.4 GHz and 5 GHz frequencies most of us are fighting over.

You can buy a single extra Deco node (around £65–70) to add to an existing Deco system, or pick up a two-pack (around £130) to cover a whole home from scratch. For this review, we're looking at the single add-on — the one that makes the most sense if you already have a decent router but one stubborn dead zone.

Who is this actually for?

  • Anyone with a large or oddly shaped home — Victorian terraces with thick walls, bungalows with a long footprint, anything with a loft conversion.
  • People with a garden office or outbuilding — if you've run a network cable out there, a Deco node on the end of it works brilliantly as a wired backhaul node, giving full speed with no wireless penalty at all.
  • Small businesses with more than one room — a single node in the meeting room or stock room can make a real difference to VoIP call quality and general reliability.
  • Anyone who already has a Deco router and wants to extend it without buying a whole new system.

It is not a magic fix if your broadband itself is slow — no router or mesh system will give you speed you're not paying for.

What's genuinely good about it

Setup is refreshingly painless. You plug the node in, open the Deco app on your phone, tap "Add device," and follow the prompts. It takes about three minutes. No logging into router admin panels, no typing subnet masks.

Performance is strong. In real-world testing, a Deco XE75 node placed midway through a house with solid-brick walls delivered around 400–500 Mbps at the far end — compared with under 50 Mbps from the original router signal alone. On a standard home broadband connection (100–500 Mbps), that means you're no longer the bottleneck.

The app is genuinely useful. You can see which devices are connected, set up a guest network, schedule when the kids' devices go offline, and run a speed test from within the app itself. It's the kind of thing network equipment should have offered years ago.

It also supports wired backhaul. If you can run an Ethernet cable between the main router and the new node, do it — the wireless speeds and reliability improve significantly, and the node then broadcasts its own strong Wi-Fi signal rather than relying on a wireless link to the parent.

What's not so good

The Deco ecosystem is, by design, a bit of a walled garden. The app is required; there's no real web interface to speak of. Some advanced users find this frustrating, though for most home users it's actually a benefit — there's nothing complicated to get wrong.

If you have a non-Deco router and don't want to replace it, you'll need the two-pack so you have a Deco unit acting as the main router. A single node won't work as a standalone — it needs a parent Deco to talk to. That's worth knowing before you buy.

The XE75 also runs slightly warm. It's not a problem, but it's not something to shove in a drawer or an enclosed cabinet.

Honest verdict

For around £65, a single Deco XE75 add-on node is one of the most cost-effective fixes for a Wi-Fi dead zone we've come across. It's simple enough for anyone to set up, performs well in real homes (not just lab conditions), and the app makes it easy to keep an eye on what's happening on your network.

If you're starting from scratch, the two-pack at around £130 is excellent value and we'd recommend it without hesitation for any home up to about 2,000 sq ft. Larger properties, or those with particularly challenging walls (old stone, for instance), might need a three-node setup.

It won't fix slow broadband, it won't replace a properly cabled office network for heavy business use, and it does tie you into TP-Link's app. But for the vast majority of home users and small businesses dealing with patchy coverage? It's a very good answer to a very annoying problem.

You can find the full list of kit we recommend — routers, backup drives, UPS units and more — on our recommended products page.