WARNING: This page is about a different car, the 2013 BMW 550i GT, 2012 BMW 550i GT, 2011 BMW 550i GT, and 2010 BMW 550i GT. However, it is still accessible from the selected car via links, so may be relevant.
0493814 614300 Adapter cable MP
NOTE:
(Adapter cable for diagnostic socket) To connect diagnosis system to diagnostic socket from 06/2000 on. [released]