I have the same problem on my screen and it won't go away. I don't even have a usb plugged in. I tried a system update, a reboot and a complete reset and started the installation from scratch. It still is on the screen until I click the remote, it goes away and then comes back a few seconds later
I am having the same issue. My Hisense Roku TV says "This USB device requires more power. Use power adapter if available. For more information..." The tv nor Roku is powered by the USB. Nothing is plugged into the USB. Why does this message continue to appear. Your solution did not address the issue.
My Roku premiere does the same thing. Plugged into the same port for months then suddenly stops working. Roku has no interest in taking the blame for this problem and providing a fix. They continue to blame the equipment of the customer and not their Roku even though the Roku is the only common denominator in this problem. I suggest a solution is to get a fire stick or of some other streaming device who will provide the proper customer care and not that this problem persist for months years even
Same problem on a Roku express 4k. I have tried multiple USB cables with multiple different power sources and a couple different HDMI cables. This error message and the trouble shooting below is obvious bull**bleep**. It's not the cables. When multiple people here, on Reddit and other places have this same problem, it's your **bleep**ing device which is faulty. I just got this thing to replace another which suddenly started running out of space despite not adding anything to it. I am extremely annoyed.