TP-Link’s Deco X68 provides robust and reliable Tri-Band Wi-Fi 6 coverage combined with mesh technology, eliminating those weak signals areas with whole-home coverage at an unrivaled price point. The Deco AX3600 whole home mesh WiFi 6 system (Deco) boasts overall speeds up to 3600 Mbps by integrating tri-band support with high-tech. An extra 5 GHz band working exclusively as the strong backhaul between Deco units eliminates weak signal areas to achieve strong and clear seamless whole home.
Source: https://www.helpnetsecurity.com/2021/04/22/tp-link-deco-x68/