To set up your Onn 5.1 soundbar, you need to choose the mode of connection you want to use. For example, if you want to use Bluetooth, you need to turn the soundbar on and activate the Bluetooth mode.
After that, open the Bluetooth on your TV or any device you want to connect. Next, look for the Onn soundbar from the list of detected devices. Once you find it, select the device and wait for it to connect. The Bluetooth indicator on your Onn soundbar will turn static blue once the connection is successful.