The 80211ac wireless standard is set to revolutionize wi fi super speed 80211ac dual band routers are already available but wireless devices are still stuck with 80211n technology upgrade your wireless device to dual band 80211ac with the usb 20 connectivity for blistering wi fi speeds on the interference free 5 ghz frequency band the ew 7811uac is with a high gain high performance and dual band antenna this antenna can greatly increase the effective wireless operation range of 80211