The hidden router setting that could make your Wi-Fi more efficient

Disabling outdated 802.11b and 802.11g modes may reduce wireless overhead on compatible home networks, but older devices could lose access.

Many households assume that sluggish Wi-Fi means they need a new router, a new package from their provider, or both. In practice, one of the most effective fixes can be hidden inside the router’s own settings. Journal du Geek reported that some boxes and routers continue to support outdated wireless standards by default, and that removing those legacy modes can reduce avoidable overhead on the network.

The issue is compatibility. Routers are often configured to keep working with very old devices, so they may still allow 802.11b and 802.11g traffic alongside newer standards. That compatibility comes at a cost, because the router must preserve support for the slowest mode it offers. Support guides from D-Link and analysis from iTechGuides both note that disabling 802.11b can improve behaviour on networks where every active device supports more recent standards, although the exact gain depends on the router, the connected equipment and the rest of the configuration.

The practical effect is straightforward. If a router keeps legacy modes enabled, it may spend resources maintaining a slower transmission profile that no longer serves the household. That can matter most on congested home networks, where several devices are competing for airtime. In such cases, removing 802.11b and 802.11g from the available modes can free the network to operate more efficiently, especially if all laptops, phones, tablets and smart devices are at least Wi-Fi 4 compatible.

Accessing the setting is usually simple. Journal du Geek said the relevant controls are generally found in the router’s administration page, often reached through a local IP address such as 192.168.1.1, 192.168.0.1 or 192.168.1.254. From there, users typically need to enter the router’s login details, open the wireless settings, and look for the section that lists supported 802.11 modes. D-Link’s support material describes the same general process, while TP-Link notes that wireless controls are usually available either through the web interface or, on some models, a hardware Wi-Fi button.

The main caution is compatibility. Disabling 802.11b or 802.11g can prevent older devices from connecting if they rely on those standards alone. iTechGuides and Geekchamp both advise checking whether any legacy printers, sensors or older home devices still need those modes before making the change. If everything in the home supports newer standards, switching to an “N only” or “N/AX only” setting may be worth testing. Journal du Geek also points out that other basics still matter: placing the router centrally, keeping it clear of interference, using 5 GHz where appropriate, and adding a repeater only when range remains a problem.