As I understand it, when the desktop mode is turned on, the Q15 should not charge and discharge the battery.
However, today, after five days of use, when working on a PC, it started charging. I turned it off, flipped the desktop mode switch, and now it doesn't seem to charge the battery when connected to a PC.
Maybe in desktop mode it is necessary to supply additional power through the second USB-c connector?
I really don't want to use the battery when listening through the PC.
I also did not find the user manual for Fiio Q15 on the website.
Why is MQA sometimes with a blue dot, and sometimes without?