If you're looking for the USB port in your Mercedes-Benz, there's a good chance you'll find it in the center console. On most models, you'll see a small door that opens to reveal the USB port. Some models also have an additional USB port near the armrest.
If your model doesn't have a center console or you can't find the USB port, check your owner's manual. In some cases, the USB port may be located in a different spot depending on the model and year of your vehicle.
Once you've found the USB port, plug in your device and enjoy hands-free access to your music and other media. You can also use the Mercedes-Benz COMAND system to control various functions of your smartphone through the infotainment system.