The asus usb ac56 is a dual band 80211ac wi fi adapter with a usb 30 connection that brings high performance wireless networking support to desktop and notebook pcs the usb ac56 features a usb 30 connection with support for wireless data rates up to 300 mbits at 24 ghz and 867 mbits at 5 ghz with compatible routers suitable for use with both desktop and notebook pcs the usb ac56 features a dual internal antenna design for great wireless network coverage with minimal desktop clutter and