ASUS ZenWiFi AX 2PK Charcoal Mesh Router. ZenWiFi AX (XT8) is a whole-home mesh WiFi system that combines extremely fast and stable wireless networking performance with simple configuration and elegant design with coverage up to 5,500 sq. ft. Featuring the latest WiFi 6 technology, ZenWiFi AX takes mesh WiFi to a whole new level with dramatically improved coverage, speed and stability.