To connect your #rokustreambar to a Roku TV or non-Roku TV, you need to first connect it using the HDMI cable and then connect it with the internet.
https://rokuolink.com/roku-stream-bar/

How do I set up the Roku stream bar on a Roku TV?
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rokuolink.com

How do I set up the Roku stream bar on a Roku TV?

To set up your Roku stream bar for the first time, connect the stream bar to the TV with the HDMI cable, activate it, and you are all set to access the streaming player.