ASUS RT-BE90U review

Wireless Connectivity

The 6GHz band is the main reason to look beyond a dual-band router. Compatible devices can use channels that older Wi-Fi equipment cannot occupy, giving a newer laptop more room to work when nearby networks are busy. Wider 320MHz channels can carry more data, provided both the device and the available channels support them.

Older devices still have the 2.4GHz and 5GHz bands. Multi-Link Operation lets suitable Wi-Fi 7 clients use more than one band, but the supported combination depends on the client and settings. Buying a Wi-Fi 7 router does not give an older phone those capabilities.

BE9400 is the combined advertised wireless rate across all three bands. It is not a download speed for one device, nor a promise that your internet connection becomes faster. The practical gains depend on the devices you own, their distance from the router and the connection coming into your home.

Performance & Coverage

RTINGS found strong 6GHz performance and useful standalone coverage, while its 5GHz results weakened with distance. It also found Wi-Fi latency adequate for everyday use rather than ideal for competitive gaming. ¹ That points toward a router for a centrally placed home setup, with Ethernet available for the equipment that benefits most from a consistent connection.

A spare bedroom behind several walls is a different challenge from a laptop in the next room. If your main problem is a distant dead spot, replacing one router with another may help less than improving placement or adding another access point. The RT-BE90U gives you that expansion option through AiMesh.

Wired Networking

All four Ethernet ports support 2.5Gbps. One normally connects to the modem or fiber terminal, leaving three for a desktop, network storage or other wired devices. That is a useful step up from gigabit Ethernet when the equipment at both ends supports it, especially for moving large files around the house.

There is no 10GbE port. A broadband plan faster than 2.5Gbps cannot pass through a single WAN connection at its full advertised rate, and real transfers also incur overhead. If you have only a few wired devices and a connection below that ceiling, the simpler port arrangement may be all you need.

Mesh & Expansion

AiMesh lets the router work with compatible ASUS units to extend the network. An Ethernet cable between them gives their connection its own path; a wireless link is easier to place but shares wireless capacity with other traffic. You can start with one router and add coverage when you know where it is needed.

The USB port supports storage sharing and compatible phone tethering. A drive can make occasional household file sharing convenient, while tethering offers a possible fallback when the main connection goes down. Phone compatibility, your mobile plan and reception still matter, and a shared USB drive does not replace a separate backup.

Network Controls

You can manage the router from the ASUS Router app or a web browser. Separate guest and smart-home networks help keep visitors and household gadgets apart from the devices holding your personal files. Family schedules and filtering are included, so you can organize access without taking on another compulsory subscription.

VPN client support can send selected traffic through a service you already use; VPN server support can help you reach your home network while away. WireGuard and OpenVPN are among the supported options. A third-party VPN service may still require its own paid account.

AiProtection adds network security tools, but it should not be read as identical to every more expensive ASUS model. Dong Knows Tech found that infected-device prevention and blocking was absent from the firmware it reviewed. ² The included tools are useful additions, alongside keeping the router and connected devices updated.

Design & Setup

This is a full-size router with external antennas, so allow some open space rather than planning to hide it behind books or inside a cabinet. A central, unobstructed position is useful for coverage and makes the rear connections easier to reach.

The RT-BE90U routes your home network; it does not contain a cable or DSL modem. You may be able to keep the modem or fiber terminal you already have, with setup depending on your provider. The supplied power adapter and Ethernet cable cover the basic physical connections.

Alternatives

The ASUS RT-BE88U suits a different priority: it offers many more wired connections, including 10GbE and SFP+, but does not have a 6GHz band. Choose between them around your actual network rather than assuming the higher model number is a universal upgrade.

For an owner of a satisfactory Wi-Fi 6 router, the useful upgrade question is whether 6GHz-compatible devices or faster wired connections would solve a current limitation. If streaming, calls and coverage already work well, there is no need to replace it just for the Wi-Fi 7 label.

Verdict

The RT-BE90U is a sensible choice for a home that can use 6GHz wireless and a few fast wired connections, with room to add AiMesh later. Its port ceiling and longer-distance limits are worth matching to your needs, but its mix of connectivity and everyday controls makes a capable single-router starting point.