The easy way to add next generation 80211ac wi fi to notebook and desktop pcs asus usb ac51 is the smallest 80211ac usb wi fi adapter for you to instantly upgrade your desktop and notebook to the next generation 5g wi fi with hassle free setup its specially designed internal antenna provides wireless speed up to up to 150mbps at 24 ghz and 433 mbps at 5 ghz it supports multiple os including windows mac os x and linux the transmission quality and excellent features make usb ac51 a great c