USB Bluetooth transmission mode:
1: USB is directly plugged into the USB interface of the computer when
the sound card is used, the blue light flashes, turn on the Bluetooth
headset or Bluetooth speaker,
enter the pairing state, the Bluetooth
transmitter will automatically search for the connection, and the blue
light will stay on after the connection is successful.
2: For use on a TV, plug the USB into a 5V powered UDB or charger,
connect the audio cable to the TV's audio port, set the TV to the
headphone output, the red light flashes,
turn on the Bluetooth headset or Bluetooth speaker, enter the pairing state, Bluetooth The transmitter will automatically search for the connection, and the blue light will be on after the connection is successful.