My wife's computer an IdeaPad with Windows 10 64 bit can only see the 2.4 Ghz band from my Netgear nighthawk router. Her adapter support the 802.11b, 802.11g and 802.11n protocols. I have an IdeaPad with Windows 7 and I can connect to the 5GHz band with an adapter that supports 802.11a, b and c...