I recently upgraded to Android Marshmallow. In the developer’s settings, I found a new option “Select USB configuration” with additional parameters, for example
- Charging only
- Mtp
- Ptp
- RNDIS (USB Ethernet)
- Audio source
- MIDI
I used the first three options: Charging Only, MTP and PTP. But how do the last 3 options work?
I tried with "Audio Source" and I think this option is for using your phone as a USB host for a sound source, but still I can’t figure out how it will work?
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