Question Display port to HDMI adaptor stop working

[jqt]

For the second time, my "Display port to HDMI" adaptor stopped working after I used it at a client on their HDMI setup. Can anyone tell me what went wrong and what I need to do to avoid in the future.

 

[jqt]

For the second time, my "Display port to HDMI" adaptor stopped working after I used it at a client on their HDMI setup. Can anyone tell me what went wrong and what I need to do to avoid it in the future?