High speed wireless connectivity the dir 809 wireless ac750 dual band router uses the latest high speed wireless technology to bring you lightning fast wi fi speeds of up to 433 mbps on the 5 ghz frequency band and 300 mbps on the 24 ghz frequency band dual band wireless for seamless performance surf the web chat and play online games on the 24 ghz band with your smartphones and computers while simultaneously streaming digital media on the 5 ghz band on your streaming media players and table