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ASUS RT-AX55 review

No. 7 of 10 in our wireless routers ranking · Updated · How we rank

Our verdict: The ASUS RT-AX55 ranks 7th of the 10 wireless routers we compare, with 8.5 out of 10.

ASUS RT-AX55

8.5/10

The ASUS RT-AX55 is a dual-band Wi-Fi 6 router rated at AX1800, with four gigabit LAN ports and AiMesh support. It suits small and medium homes with modest broadband speeds and a few Wi-Fi 6 devices.

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Why it's here

  • ASUS app and AiProtection security are included without a subscription
  • AiMesh support for adding ASUS nodes later
  • Four gigabit LAN ports
  • Stable connection reported by owners on fibre plans

Keep in mind

  • AX1800 speeds leave little headroom for a busy household
  • No USB port
  • No 160MHz channels, so 5GHz speeds sit well below the AX3000 routers here

Why the ASUS RT-AX55 scores 8.5

Each bar shows where it places among the 10 wireless routers in this guide, so a full bar is 1st of 10. How happy owners are counts for most of the score.

  • How happy owners are4th of 10
  • How many rated it2nd of 10
  • How new it is10th of 10

Level with the MERCUSYS MR80X

The MERCUSYS MR80X and the ASUS RT-AX55 score the same, so either is a safe pick. The MERCUSYS MR80X goes first because it is the newer design.

About the ASUS RT-AX55

The RT-AX55 is a 2x2 dual-band Wi-Fi 6 (802.11ax) router. Its top rated speeds are 574Mbps on 2.4GHz and 1201Mbps on 5GHz, which is where the AX1800 label comes from. It has OFDMA, MU-MIMO, beamforming and Target Wake Time. Channels top out at 80MHz, so there is no 160MHz option.

Inside is a quad-core 1.5GHz processor with 256MB of RAM and 128MB of flash. The four antennas are external and cannot be removed. The case measures 230 x 134 x 56mm and weighs 374g. It has no wall-mount holes and no USB port.

The back has one gigabit WAN port and four gigabit LAN ports. There is no built-in modem. In the UK it connects to an Openreach ONT, or to an ISP's own router set to modem mode, such as a Virgin Media Super Hub.

Setup and day-to-day control go through the ASUS Router app or a browser-based panel. Features include guest Wi-Fi, parental controls, traffic management and WPA3 (Personal). You can later add other ASUS routers as AiMesh nodes.

What owners report about the ASUS RT-AX55

Little usable owner feedback for this exact model turned up on pages we could open, so we have not drawn conclusions about long-term reliability or common faults.

Who the ASUS RT-AX55 suits

The RT-AX55 suits a small or medium home with a fibre plan well below gigabit speeds, a handful of Wi-Fi 6 phones or laptops, and a wish for an easy app. It also works as a first step into AiMesh, since ASUS nodes can be added later. Reviewers found 5GHz speed good near the router but upstairs coverage limited, so a larger or multi-storey home may need a mesh node or Powerline adapter.

Look elsewhere if you have many older Wi-Fi 5 devices, since reviewers saw little benefit for them and weak 2.4GHz performance. A busy household, a plan above a few hundred Mbps or a need for a USB port points to something faster. The TP-Link Archer BE3600 and ASUS RT-BE58U have more headroom, and the MERCUSYS MR80X is a cheap AX3000 alternative.

Questions about the ASUS RT-AX55

Should I enable MLO on my ASUS RT-AX55?

No, the RT-AX55 has no MLO setting. MLO belongs to Wi-Fi 7, and this router is Wi-Fi 6 (802.11ax).

How do you set up the ASUS RT-AX55 in the UK?

Connect it to an Openreach-supplied modem, or turn on modem mode on your ISP's router, such as a Virgin Media Super Hub. The ASUS Router app walks you through the rest.

Does the ASUS RT-AX55 have a built-in modem?

No. It needs a separate modem or ONT, so it is not a drop-in replacement for a VDSL or ADSL modem router.

Does the ASUS RT-AX55 support WPA3?

Yes. Reviewers list WPA3 (Personal) alongside WPA2 (Personal and Enterprise).

Can the ASUS RT-AX55 be used in an AiMesh network?

Yes. It supports AiMesh, so you can add compatible ASUS routers as nodes. It has no dedicated backhaul band.

Other wireless router picks

The other badge winners in our wireless routers ranking.

All 10 wireless routers, compared

  1. 1 TP-Link Archer BE3600Best Choice 8.9 Check Price
  2. 2 TP-Link Archer AX53Value for Money 8.7 Check Price
  3. 3 TP-Link Archer BE550Best Premium 8.7 Check Price
  4. 4 ASUS RT-BE58U 8.5 Check Price
  5. 5 ASUS RT-BE86U 8.5 Check Price
  6. 6 MERCUSYS MR80XBest Budget 8.5 Check Price
  7. 7 ASUS RT-AX55This review 8.5 Check Price
  8. 8 NETGEAR Nighthawk RS200 8.3 Check Price
  9. 9 MERCUSYS MR47BE 8.3 Check Price
  10. 10 AVM FRITZ!Box 7530 AX UK 8.2 Check Price
See the full wireless routers ranking

The ASUS RT-AX55 on Amazon

ASUS RT-AX55

The ASUS RT-AX55 is a dual-band Wi-Fi 6 router rated at AX1800, with four gigabit LAN ports and AiMesh support. 8.5 out of 10.

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How we score it

Every score here comes from our ranking model; no editor sets the order. We haven't read the review sites for this guide yet, so for now it is led by owners. It ranks products by how happy owners are, holding back any product few owners have rated until more agree. How many rated it and how new it is only settle close calls, and value for money earns its own badge rather than a higher place. We compared 19 models for this guide before settling on these ten.

Brands can't pay to be included or to move up. We last checked these picks in November 2026.

How we rank, in full

Where these facts come from