Where most automakers give the driver a simple USB port and auxiliary input, Audi still uses a weird, proprietary connection that requires the user to purchase and swap pigtails for Apple's 30 - pin dock connector, USB, or a 3.5 mm analog auxiliary input. (cnet.com)
This was where Apple chose to unveil CarPlay — the proprietary connection between iPhones and car infotainment systems — alongside Ferrari, Mercedes - Benz and Volvo. (extremetech.com)
Along the side panels, there are left and right internal speakers; the top edge houses the Power and Volume controls, and on the bottom panel there's a proprietary connection for the included charging / sync cable, which connects the tablet to both your computer and the AC adapter via USB. (pcmag.com)