The ZenWiFi XD6 in the system consists of a pair of ASUS AX5400 WiFi 6 routers, featuring unique technologies that give you superfast, reliable and secure WiFi connections — inside or outside your home! The 160MHz bandwidth may be unavailable in the 5GHz band in some regions / countries due to regulatory restrictions. Compatible WiFi 6 device required. The data compares speed of 4x4 11ax on 5GHz 160MHz bandwidth with 1024QAM modulation to speed of 4x4 11ac on 5GHz 80MHz with 256QAM modulation. The number of speed is calculated with data rate of 2.4 GHz band and of 5 GHz band, which are respectively 574 and 4804 Mbps. And the DFS channels may not be supported in some countries due to local regulations.