ASUS RT-AX1800S Dual Band WiFi 6 Extendable Router
Bottom line: The ASUS RT-AX1800S Dual Band WiFi 6 Extendable Router ($58.00 on Amazon as of 2026-10-06): Subscription-free AiProtection Classic security by Trend Micro - no trial expiry; main trade-off: 2x2 dual-band only - no tri-band or 160MHz-class throughput.
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*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.
Pros & Cons
Pros
- ✓ Subscription-free AiProtection Classic security by Trend Micro - no trial expiry
- ✓ 5 Gigabit ports: 1 WAN + 4 LAN, 10x faster than 100-Base T
- ✓ AiMesh compatible, so it can expand into a mesh later
- ✓ Built-in ASUS Instant Guard one-click VPN for remote access
Cons
- ✗ 2x2 dual-band only - no tri-band or 160MHz-class throughput
- ✗ WiFi 6 only; no WiFi 6E 6GHz or WiFi 7 support
- ✗ Dual-core CPU may limit heavy VPN or QoS throughput
- ✗ No multi-gig WAN port - capped at 1 Gigabit internet
Manufacturer description
The ASUS RT-AX1800S is a 2x2 dual-band WiFi 6 router built for homes where the device count keeps climbing. The 802.11ax standard brings MU-MIMO and OFDMA, so the router allocates channels efficiently and talks to multiple clients at once instead of making your phone wait behind a streaming box. Support for 1024-QAM and 80MHz bandwidth pushes more data per transmission, and OFDMA scheduling also reduces how long battery-powered IoT devices stay awake on the network. Four external antennas handle coverage, while a dual-core processor keeps routing overhead in check. Wired gear gets five…
SpecPicks Verdict
SpecPicks scored ASUS RT-AX1800S Dual Band WiFi 6 Extendable Router using a rating × review-volume × price-fit model applied to published specs and reviews across the networking category. Compare with similarly-priced alternatives in the networking category before committing. 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
Is the ASUS RT-AX1800S security really free, or does it need a subscription?
It is subscription-free. AiProtection Classic, powered by Trend Micro, and the parental controls are included with the router, and ASUS Instant Guard VPN is built in at no extra charge.
How many Ethernet ports does the RT-AX1800S have?
Five Gigabit ports total: one Gigabit WAN port for your modem and four Gigabit LAN ports for wired devices, which ASUS rates at 10x the speed of 100-Base T Ethernet.
Can I add more units later to cover a bigger house?
Yes. The RT-AX1800S is AiMesh compatible, so you can pair it with other AiMesh-capable ASUS routers to build a single mesh network instead of replacing it.
Is this router good enough for gaming and 4K streaming?
ASUS positions it for gaming and streaming. WiFi 6 with MU-MIMO and OFDMA lets it serve multiple devices at once, and 1024-QAM raises per-transmission throughput. Actual speeds vary with network traffic and building materials.
Key Features
- New-Gen WiFi Standard – WiFi 6(802.11ax) standard supporting MU-MIMO and OFDMA technology for better efficiency and throughput.Antenna : External antenna x 4. Processor : Dual-core (4 VPE). Power Supply : AC Input : 110V~240V(50~60Hz), DC Output : 12 V with max. 1.5A current.
- Ultra-fast WiFi Speed – RT-AX1800S supports 1024-QAM for dramatically faster wireless connections
- Increase Capacity and Efficiency – Supporting not only MU-MIMO but also OFDMA technique to efficiently allocate channels, communicate with multiple devices simultaneously
- 5 Gigabit ports – One Gigabit WAN port and four Gigabit LAN ports, 10X faster than 100–Base T Ethernet.
- 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.
- Actual data throughput and Wi-Fi coverage will vary from network conditions and environmental factors, including the volume of network traffic, building material and construction, and network overhead, result in lower actual data throughput and wireless coverage.
Full Specifications
| Brand | ASUS |
|---|---|
| Color | BLACK |
| Voltage | 110 volts_of_alternating_current |
| Coverage | wide area |
| Frequency | 5 GHz |
| Model Name | RT-AX1800S |
| Unit Count | 1 Count |
| Antenna Type | Retractable |
| Connectivity | Wireless, WiFi |
| Model Number | RT-AX1800S |
| Built-In Media | Power adapter, Quick start guide, RJ-45 cable, RT-AX1800S Router, Warranty card |
| Control Method | App, Touch |
| Item Type Name | Networking Router |
| Connection Type | Wireless |
| Controller Type | App Control, Push Button, Web GUI |
| Mfr Part Number | RT-AX1800S |
| Number of Ports | 5 |
| Special Feature | WPS |
| Antenna Location | Business, Home |
| Wi-Fi Generation | WiFi 6 |
| Full listing title | ASUS RT-AX1800S Dual Band WiFi 6 Extendable Router, Subscription-Free Network Security, Parental Control, Built-in VPN, AiMesh Compatible, Gaming & Streaming, Smart Home |
Ready to buy?
ASUS RT-AX1800S Dual Band WiFi 6 Extendable Router, Subscription-Free Network Security, Parental Control, Built-in VPN, AiMesh Compatible, Gaming & Streaming, Smart Home is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.
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