Hi! I'm new to the forum. I'm here because I am having problems with my Shure PG42 XLR microphone. Basically, I am trying to use phantom power to connect it to a Macbook. I have a Polsen XLR-USB-48 adapter. It's a cheap piece of equipment, but it IS supposed to provide 48 volts of phantom power to the microphone so that the computer can pick up the input. The light on the adapter is indicating that phantom power is being provided, and the Macbook is recognizing the microphone, but it isn't picking up any sound. Does anyone here have some advice for me? Thank you.