is there an ipod usb port on the 2007 m35

If there is, it is a special cable (about $50) that plugs into a plug in the center armrest. It is at the front and down low. Check that out and let me know it it works.

My car does not have one nor is there an aux port. I do have the entertainment package with and extra dvd player in the center console though.

I am not sure with the DVD installed. If you have the manual, it must say in there. I would think there would be one.

what is the name of that cable?

I don't know that there is a special name for the cable. Also, with the DVD system there may not be a port at all. You need to call the parts manager at your local dealership.