ASUS

ASUS RT-AX55 AX1800 Dual Band WiFi 6 Gigabit Router

Name: ASUS RT-AX55 AX1800 Dual Band WiFi 6 Gigabit Router, 802.11ax, Lifetime Internet Security, Parental Control, Mesh WiFi Support, MU-MIMO, OFDMA, 4
Brand: ASUS
SKU: B08J6CFM39

Status: ASUS RT-AX55 AX1800 Dual Band WiFi 6 Gigabit…: Unavailable on Amazon as of 2026-10-18 16:29 UTC. SpecPicks has no in-stock listing with matching specs on file; the search below lists current offers. eBay sellers may still list this model new or used.

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Bottom line: The ASUS RT-AX55 AX1800 Dual Band WiFi 6 Gigabit Router: AiProtection Classic by Trend Micro is free for the router's lifetime, no subscription; main trade-off: dual-band only, so no dedicated 6GHz band for WiFi 6E clients.

Unavailable on Amazon as of 2026-10-18 16:29 UTC

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Currently unavailable on Amazon. Not the same product — 3 in-stock alternatives:

Similar: TP-Link Wifi 6 AX1500 Smart WiFi Router — $34.99 on Amazon as of 2026-10-20 22:22 UTC (price may vary).

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Similar: TP-Link AX1800 WiFi 6 Router — $54.99 on Amazon as of 2026-10-21 04:20 UTC (price may vary).

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Similar: FENVI AX3000 WiFi 6 PCIe Card WiFi6 AX200… — $21.99 on Amazon as of 2026-10-20 22:25 UTC (price may vary).

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Original listing (currently unavailable) → Compare to similar networking

By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-18

Mike Perry — Hardware researcher since 2014. For home networking and Wi-Fi gear, synthesises manufacturer specs and independent reviews rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference. About the author →

Pros & Cons

Pros

✓ AiProtection Classic by Trend Micro is free for the router's lifetime, no subscription
✓ 1201 Mbps on 5GHz and 574 Mbps on 2.4GHz for 1800 Mbps combined
✓ 1.5GHz quad-core CPU holds up under heavy multi-device load
✓ OFDMA plus MU-MIMO cut latency on congested networks with many clients
✓ AiMesh support lets you pair a second ASUS unit instead of replacing this one

Cons

✗ Dual-band only, so no dedicated 6GHz band for WiFi 6E clients
✗ No multi-gig WAN or LAN, all four ports cap at 1 Gigabit
✗ 3000 sq ft rating assumes open layout, thick walls will cut it short
✗ AiProtection Classic is the trimmed tier, not full AiProtection Pro

Manufacturer description

The ASUS RT-AX55 is a dual-band WiFi 6 router built for households that have outgrown 802.11ac. It runs 802.11ax with 80MHz bandwidth and 1024-QAM for a combined 1800 Mbps of throughput, split across 574 Mbps on 2.4GHz and 1201 Mbps on 5GHz, and covers up to 3000 square feet. A 1.5GHz quad-core processor keeps that traffic moving when a dozen phones, consoles, and smart plugs are all online at once. MU-MIMO and OFDMA are the reason the RT-AX55 handles congestion better than an older router at the same speed rating. OFDMA slices each channel among multiple devices instead of making them…

SpecPicks Verdict

SpecPicks scored ASUS RT-AX55 AX1800 Dual Band WiFi 6 Gigabit Router using a rating × review-volume × price-fit model applied to published specs and reviews across the networking category. ASUS's networking lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for networking of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

How fast is the ASUS RT-AX55?

It is rated AX1800: 574 Mbps on the 2.4GHz band and 1201 Mbps on the 5GHz band, about 1800 Mbps total. Real throughput depends on your internet plan and network conditions.

How much area does the RT-AX55 cover?

ASUS rates maximum range at 3000 square feet. Walls, floors, and interference reduce that, and you can add an AiMesh-compatible ASUS router to extend coverage.

Do I have to pay for the security features?

No. AiProtection Classic, powered by Trend Micro, is included for the lifetime of the router, along with parental controls and ASUS Instant Guard one-click VPN.

Does the RT-AX55 work with WiFi 6E or 6GHz devices?

No. It is a dual-band 802.11ax router covering 2.4GHz and 5GHz only. WiFi 6E clients will connect, but on 5GHz rather than 6GHz.

Is the RT-AX55 worth it compared to a WiFi 5 router?

For dense networks, yes. OFDMA and MU-MIMO let it serve many devices at once instead of queueing them.

Key Features

Maximum Range : 3000 Sq Ft.Processor : 1.5GHz quad-core processor.
Next-Gen WiFi Standard - Supporting the latest WiFi standard 802.11AX (WiFi 6) and 80MHz bandwidth for better capacity and efficiency.
Ultra-fast WiFi Speed - RT-AX55 supports 80MHz bandwidth and 1024-QAM for dramatically faster wireless connections. With a total networking speed of about 1800Mbps — 574 Mbps on the 2.4GHz band and 1201 Mbps on the 5GHz band.
Increase Capacity and Efficiency - Supporting not only MU-MIMO but also OFDMA technique to efficiently allocate channels, communicate with multiple devices simultaneously.
Commercial-grade Security Anywhere – Protect your home network with AiProtection Classic, powered by Trend Micro. And when away from home, ASUS Instant Guard gives you a one-click secure VPN.

Full Specifications

Brand	ASUS
Color	black
Voltage	110 volts_of_alternating_current
Coverage	3000 Sq Ft
Frequency	5 GHz
Model Name	RT-AX55(Black)
Unit Count	1 Count
Antenna Type	Fixed
Connectivity	Wireless, WiFi, 2.4GHz
Model Number	RT-AX55(Black)
Maximum Range	3000 Sq Ft.Processor : 1.5GHz quad-core processor.
Built-In Media	Power adapter, Quick start guide, RJ-45 cable, RT-AX55(Black) Router, Warranty card
Control Method	App, Touch
Item Type Name	ASUS RT-AX55 AX1800 Dual Band WiFi 6 Gigabit Router, 802.11ax, Lifetime internet security, Parental Control, Mesh WiFi support, MU-MIMO, OFDMA, 4 Gigabit LAN Ports, Beamforming
Connection Type	Wireless
Controller Type	vera
Mfr Part Number	RT-AX55(Black)
Number of Ports	5
Special Feature	Alexa Compatible, Guest Mode, Internet Security, Parental Control, QoS
Antenna Location	Business, Home
Full listing title	ASUS RT-AX55 AX1800 Dual Band WiFi 6 Gigabit Router, 802.11ax, Lifetime Internet Security, Parental Control, Mesh WiFi Support, MU-MIMO, OFDMA, 4 Gigabit LAN Ports, Beamforming

Ready to buy?

Amazon shows no buyable offer for ASUS RT-AX55 AX1800 Dual Band WiFi 6 Gigabit… at the last check. A similar in-stock product is TP-Link Wifi 6 AX1500 Smart WiFi Router. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

View Similar — $34.99