Power Crisp Clear Sound: High-quality multiple horns for increased volume without distortion. No Current Sound： Increase the shock absorber, even if the standby does not have any noise. Top Knob: Designed to be on top, easy to adjust the volume. Turn on/off the computer speaker. Touch on/off Lights: Newly upgraded one touch to turn off/on the light to avoid the tedium of buttons. 1 - Host backend: Connect BOTH the AUX plug and USB plug to the Host backend, more stable power supply and audio output. 2 - Click Speaker Icon in the taskbar. 3 - Select the " Speaker " as your computer playback device. 4 - Make sure the computer speaker is on and not at minimum volume. 5 - Make sure the computer or other device is not muted or at minimum volume. Q: What should I do if there is still noise sound after I turn off my computer? A: Please turn off the computer speaker when not in use or turn the speaker volume knob to the minimum. - Q: What devices can the type c adapter be compatible with? A: Type C adapter is compatible with MacBook Pro after 2016 and MacBook Air after 2018, laptops, tablets, etc. Power Source: USB Audio Source: AUX Turn on/off the Light: Touch on Top Turn on/off Speakers: Knob Product Dimension: 2.48 × 14.96 × 2.55ins. Cable Length: Both upgraded to 47ins extra long for extra wide display. Packaging Includes: Type C Adapter; Computer Speakers; Manual