Help getting started with Roku devices, including setup, connecting your device to your TV, linking a Roku device to your account at my.roku.com/link, adding channels, subscribing to services, and more.
Re: My tv's usb port apparently won't power my device
Don't use it. (I don't think that was ever the preferred method anyway.) Rokus normally come with an AC power supply and a USB cable that pugs into it.