Keep critical links up where cable is impractical. The Ubiquiti PowerBeam airMAX 400 mm is built for focused 5 GHz point-to-point connectivity, using a large dish antenna to concentrate RF energy and improve link performance over distance. That matters when you need dependable backhaul between buildings, across yards, or to remote network edges where signal margin is tight. This model is designed around Ubiquiti’s airMAX ecosystem and supports 802.11a/b/g/n/ac wireless LAN standards on the 5 GHz band. The pole-mount form factor simplifies outdoor installation on masts and towers, while the Ethernet connection keeps integration straightforward with existing network infrastructure. For teams that care about link stability more than raw feature count, the 400 mm reflector gives this unit a clear advantage over smaller, lower-gain alternatives. Use it where uptime and reach matter: campus interconnects, surveillance backhaul, rural access links, and building-to-building bridges. The result is a purpose-built wireless bridge that earns its place in the field by delivering disciplined RF performance, not excess complexity.