GROM Audio MST4-BMWO4 User manual

Hello! I've reviewed the user manual for the GROM-MST4 car audio adapter. This document provides instructions on how to connect various devices to your car's stereo system, including USB drives, Android devices, iPods/iPhones, Bluetooth dongles and AUX input. I understand it also covers supported audio formats, mode selection, and troubleshooting. Feel free to ask me any questions you might have about this device!
What devices can I connect to this adapter?

Which audio formats are supported?

How do I switch between USB and AUX modes?

Can I charge my phone with this device?