I got the single BD5 to extend the range of my three node BE14000 mesh. Good news: it did extend the range. Bad news: Despite what the ASUS site says, MLO is not supported on the BD5.
Written by a customer while visiting https://www.asus.com
Purchased a bundle set with this as the Ai Mesh Node, and the TR-BE92U as the main router. It took several hours to get both routers to cooperate with each other. They kept trying to be the one and only. Several hours spent reading the FAQs, downloaded and installed the latest firmware and other software to help them work better. In the end, I was able to figure it all out, and am happier for it. I do not recommend getting these routers unless you like digging into the threads online to learn what each option means, and there are a ton of them, and what to just leave alone. Again, happy now, but frustrating time getting there.
Written by a customer while visiting https://www.asus.com