I looked at this support article:
MacBook and MacBook Pro (13-inch): How to use the combination audio port for an audio input device - Apple Support
It was not nearly as specific as I would have liked about which models do and don't support the audio line in. Does every single 13-inch MacBook Pro support the audio line in? If anyone has a detailed list of which models do and don't support the feature, I'd like to know. Thanks!
I posted this in the MacBook Pro column, but I'm also interested in finding out about the other Mac models as well (including the desktop models).
