Is the second 30-pin connector compatible with other iPhone accessories?

I would like to use this to watch exercise videos on my TV while using an ANT+ adapter and appropriate software to monitor my heart rate. I cannot find any information if the extra 30 pin port supports accessories, or only charging/syncing.

Apple 30-pin Digital AV Adapter

Apple 30-pin Digital AV Adapter

Product No Longer Available

1 Answer from the Community

  • Answer

    Yes, its fully compatible with any 30 pin dock accessorie.