Simultaneous dual band 5 0 and 2 4ghz operation very versatile with 4 gigabit ethernet ports and usb2 0 port media server device server and bit torrent for easy file sharing across connected devices simple parental control function os required microsoft windows xp microsoft windows vista 3264 bits microsoft windows 7 3264 bits windows 8 3264 bits apple mac os x 10 4 10 8