Does USB4 require special cables? Yes – Certified 40Gbps USB4 cables (marked with 20Gbps/40Gbps labels) are essential. Passive cables longer than 0.8m may throttle to 20Gbps. Is Wi-Fi 6 backward compatible? Absolutely. Wi-Fi 6 routers… How Do USB4 and Wi-Fi 6 Transform Mini Desktop Computer Connectivity?