I have a slightly sad and reflective story for you, relating to the use of V3M in a surprising way...
Over the weekend, I decided to organize the cables in my rather complicated set
(stereo amplifier, Fosi V3M power amplifiers, home theater receiver, DAC, amplifier switch, tuner and turntable, PC, TV).
Well, it turns out that the power supply plugs of the Fosi power amplifiers, unless you are very careful, do not differ much from the plug of the power supply cable of my DAC.
So it turns out that there are absolutely no obstacles to inserting the plug from a 48V power supply into a DAC powered by 5V USB.
As you might expect, I only saw a small flash, followed by the typical smell of burning electronics.
State of the art, $200 DAC went to heaven in a blink of the eye.
Watch your plugs people...