My best guess is that only the power pins of that usb port is connected. So they're going over a debug port for io.
Someone in a different forum said it was a usb to serial port then on a pc a network port was forwarded to the serial port, but it is very unclear in the article.
Someone in a different forum said it was a usb to serial port then on a pc a network port was forwarded to the serial port, but it is very unclear in the article.