Edimax wireless dual band usb adaptors edimax ew 7811utc this wireless mini usb adaptor from edimax allows you to upgrade your wlan enabled device to a dual band capable 80211ac with the fastest possible usb 20 port so you can experience incredible speeds when browsing the internet on the underutilised 5 ghz frequencythe wi fi standard of the next generationcompatible with the 80211ac wi fi standard and offering speeds of up to 433 mbits on the frequency 5 ghz almost three times as fa