CableCreation USB 3.0 to HDMI Adapter (DisplayLink Chip) USB External Display Graphics Adapter Compatible with Windows MacLinux Black

3. Is this compatible with USB 2.0? This adapter is backward compatible with USB 2.0. But it is strongly recommended connecting with a USB 3.0 port for optimal resolution and performance. 4, Why my TV does not have sound? -If you are running macOS, please go to Apple iconSystem PreferencesSoundOutput, and then choose your corresponding device as your output. -If you are running Windows, please go to lower right-bottom of your desktop, right click the audio iconPlayback DevicesPlayback, and then choose your HDMI TV as the sound output.

5, Why my Apple USB SuperDrive could not work? Since the adapter does not support HDCP function, so it would be normal that you could not see the image on your HDMI monitor when you are using the Apple USB SuperDrive. 6. Why is the video so laggy? It's most probably because you are playing a video beyond the capacity of your computer. Please do not play 4K videos, and select 1080p format when you are watching an online video. 7. When I connect the adapter to a second external display, why does it not work? It depends on your computer in terms of the amount of displays you can connect.

For example, MacBook Air 2011 supports only 1 external display while MacBook Air 2015 supports 2. Please check your computer configuration before you decide to connect to multiple displays.