So, I looked through the schematics and the 26 pin “kitchen sink” or “blind mate” connector should be a 16 pin connector. Apparently something changed between when the drawings were made and when the computer went into production. 

I found the 26 pin version of the molex connector specified, but it doesn’t look like the connector on the board. I’m wondering if this was something special that Foxconn made for Apple, or if I just need to look a little longer.