Firstly, please know that our HDMI cable contains USB C to HDMI cable and  HDMI to HDMI cable.

1. If your product is a USB C to HDMI cable, please refer to the following articles:

• Introduction to USB C to HDMI cable: Introduction-to-USB-C-to-HDMI-Cable
• USB C to HDMI cable FAQ: USB-C-to-HDMI-Cable-FAQ

Troubleshooting for display-related issues:

• If the USB C port of your laptop cannot support DP Alt mode(video output), we are afraid that you are unable to get a display through our hub. To confirm this, you can also consult your laptop's user manual, contact the seller, or check the manufacturer's website 
• If you confirm the USB C port of your laptop can support DP Alt mode, please try other HDMI cable works with your laptop and monitor or not
• Try the Anker cable with another laptop and monitor to see if helpful

2. If your product is an HDMI to HDMI cable, please refer to the following information:

• Introduction to HDMI to HDMI cable: Anker-HDMI-to-HDMI-Cable-FAQ
• USB C to HDMI cable FAQ: Anker-HDMI-to-HDMI-Cable

Troubleshooting for data transferring issue :

• Try if other HDMI cable works with your laptop and monitor or not
• Try the Anker cable with another laptop and monitor to see if helpful.

What should I do if the cable has frayed/physical structural damage?

Please contact support@anker.com for the warranty claim and suggest you not keep using them due to the safety risk. 

If you have any questions, please contact us for further assistance.