Originally Posted by Technic
The elusive USB cable (no P/N is available so far):
The video cable looks exactly the same as the USB cable but without that built-in circuitry/filter bump shown with the velcro wrapper above.
As recommended by "Booster4075" I ordered USB cable 61129196805 (for E70). This cable is also equipped with that "built-in circuitry/filter bump".
The only difference to the cable shown above is that both plugs at the ends of that cable are angeled (90 deg.):
@Booster4075: Thank you for the part number!