A reader recently asked me if he could use two UDMs — one connected to the ISP modem and one in his home office (where he needed additional switch ports). He couldn’t use ethernet between those two locations, and figured he could use two UDMs to solve that problem “wirelessly.” Unfortunately, you can’t install two UniFi controllers in the same managed network — at least not as far as I know. The reader ended up buying the AmpliFi Alien Mesh Kit to address his use case. When I got the UDM Pro, I thought about ways to reuse the no-longer-needed UDM, and I hoped I could use it in my office as an additional access point. Unfortunately, that doesn’t work as UniFi doesn’t allow you to adopt the extra network controller.