@sudhakar37ym
Don't get it messed up bro.
USB standard support 480 Mbps does not mean that it will be the minimum throughput.
It is just that,we can send 480 Mbps across USB.
IT WILL NOT NECESSARILY PUSH THE WIFI ADAPTER TO SEND 480 Mbps data or receive it.
It is like a German highway, but Maruti 800 would not run at 300KMPH juust because it's German highway.