How Do I Connect My ONN Headset to Its USB Dongle?

First confirm the exact headset model and what type of dongle it is. Some headsets are Bluetooth-only, while others use a dedicated wireless adapter. A dedicated adapter usually comes pre-paired and doesn’t use normal Bluetooth pairing mode—you plug it in, install any required software, turn on the headset, and select the adapter as both the audio input and output device. If the dongle is supposed to be pre-paired but the headset never recognizes it, the adapter or headset may need a specific reset or replacement-pairing procedure.

Try another USB port, preferably one directly connected to the computer rather than through a hub, and check whether the headset or dongle needs a manufacturer driver or firmware update. Also make sure the dongle appears as an audio device in your system’s sound settings.