This is a Wi-Fi 6E router, meaning it supports the newer 6 GHz band, something that really helps in crowded environments where traditional bands are congested. 4 GHz, 5 GHz, and 6 GHz) allows devices to spread out efficiently, reducing interference. The fiber is connected to an Optical Network Terminal (ONT) inside or outside your home. The technician powers, tests, and. The ASUS RT-AC86U is a top-tier router for serious gamers, streamers, and households with heavy internet usage. This device converts the light signals sent through the fiber cable into electrical signals your home's devices, like computers or gaming consoles, can understand.