I do not see a USB port within the center console in my '07 X5. It only has the Auxiliary line-in input. I would prefer the Idrive control of the Ipod for alot of reasons. Perhaps the USB was an option in later years? I'm pretty sure it became standard in either '10 or '11. I searched the threads, and most of the topics were related to using an already in place USB.
For those without the USB, has anyone added an I-pod interface to the E70? I had it done to my E60, and it works great.