Is the ZenWiFi BD4 a true Wi-Fi 7 router?

Yes. It supports the Wi-Fi 7 standard, including Multi-Link Operation and 4K-QAM, on its dual-band radios. It does not have a 6 GHz band, so it is a partial step up from Wi-Fi 6 rather than a full tri-band upgrade.

How many square feet does a two-pack cover?

ASUS rates the two-pack for roughly 5,000 sq ft, but real coverage depends on walls and layout. Owners in larger or thick-walled homes often add a third node.

Can I use it with my existing ASUS router?

Yes. The BD4 works with AiMesh, so it can pair with other AiMesh-compatible ASUS routers to extend coverage. Mixing models means the older router's radios set the ceiling for that node.

Does it support wired backhaul?

Yes. Each node has two 2.5 GbE ports, so you can use one for the modem and one for a wired backhaul link or a fast wired device. Wired backhaul gives the most consistent speeds.

Is it good for gaming and video calls?

It handles gaming and video calls well, especially with wired backhaul. The lack of a 6 GHz band means more sharing on 5 GHz in dense neighborhoods, so a tri-band system may be better if interference is heavy.