Sorry. Yes, it was from the popup window w/ the manufacturers, type, etc.
When I first clicked to add an interface on that screen (well, select one from the options actually), there were none to choose from on the far right. Manufacturers were listed and types of devices in the middle, but the far right was blank.
Again, reasonably sure (99% - but who knows...I might have been high or something) I hadn't selected any manfacturers yet. The original page had nothing listed at all for devices on the far right.