Asus ZenWiFi BD4 mesh Wi-Fi system Wi-Fi 7, dual-band, AiMesh, 3-pack

The BD4 uses the Wi-Fi 7 standard (802.11be) and supports every earlier standard from 802.11a up to Wi-Fi 6 (802.11ax). New Wi-Fi 7 phones and laptops get the benefits of the new standard, while older streaming boxes, printers and smart devices still connect. The dual-band design keeps the system straightforward and suits an ordinary home.

The pack contains three units that work together as one mesh network. One node goes where your router is, the others at the far end of the house or on another floor. The whole house shares one network name and password, and a phone or laptop moves between nodes on its own, with no manual network switching as with old range extenders.

AiMesh is the ASUS mesh technology, and the AiMesh Extendable label means the system can be expanded. If three nodes ever stop being enough, for example after an extension or when bringing Wi-Fi to a garden building, you can add other AiMesh-capable ASUS routers without replacing the existing system.

Each unit has four internal antennas and MU-MIMO support, which lets it send data to several devices at the same time rather than one after another. In a home where phones, TVs, a games console and smart home sensors are all online together, that keeps connections steadier. The antennas sit inside the housing, so the nodes do not stand out in a living room or hallway.

Owners of a terraced house, detached house or large flat whose router does not reach every room; families who want Wi-Fi 7 support without a costly quad-band system; and anyone planning to expand the network later with AiMesh. With three nodes in the box, even a multi-storey house is covered from day one.