Dupe

I got 3 of these.  Transfers power both ways in charge mode, but not pink LED. Isn't working for audio for me. Any advice?

I don't know much in the way of audio hardware but networking I may have knowledge or ideas to share about.  If you would, provide model numbers and if applicable revision numbers along with make and model of the router and the access point.   I have a few ideas I could research based on the...