Hi, I've bought the same lead as you, but i don't get any sound at all when plugging my regular mic in via the usb cable. I've tried going through preferences (in garageband) and making sure the monitor is on, and the microphone definitely is connected in properly, yet i get no sound at all even testing. When i go through system preferences and test, no sound is picked up either. Is there anything else i can do or do I need some sort of driver?
Microphone is AKG D5 model, using a macbook air.
It also says there are 0 MIDI connections in the preferences panel in garageband.