Follow these steps to connect your Smart TV to a soundbar:

1. Connect one end of an HDMI cable to the HDMI OUT port on the back of the soundbar.
2. Connect the other end of the HDMI cable to the HDMI IN port on the Smart TV.
3. Ensure that your soundbar is attached to a power source.
4. Use the included remote or switch on the soundbar to adjust the settings.
5. Using the on-screen menu of the Smart TV, locate and select the Sound Settings.
6. Select the Digital Audio Out setting, then the type of connection that you made.