That’s probably only true for USB power supplies - a USB adapter isn’t set up to do anything with voltage and probably just passes the positive and negative pins through.
The VGA adapter feeding power back through USB in the first place, yeah, that’s not supposed to happen.
Put it this way, either the standard on the other end of the adapter specifies 5V, or the adapter doesn’t just pass it through, or the adapter is broken!
That’s probably only true for USB power supplies - a USB adapter isn’t set up to do anything with voltage and probably just passes the positive and negative pins through.
The VGA adapter feeding power back through USB in the first place, yeah, that’s not supposed to happen.
Put it this way, either the standard on the other end of the adapter specifies 5V, or the adapter doesn’t just pass it through, or the adapter is broken!