How do I hook up roku only using the USB port an my ty keeps saying no divice found

You can't hook it up with USB, only HDMI or on the older Roku's RCA cables. Try a different cable or restting the Roku.
 
Solution



I was looking at some Roku devices last night and saw that some version use the USB port for power. So you would plug into the HDMI port and then plug the other cable into the USB port for power.