I have a lavalier microphone with 3 pins that I connected to my MacBook. When I connect the microphone to my MacBook, the MacBook thinks the microphone is "headphones with built in external mic". Does anyone know how to make the microphone only input?
I have found the answer to my question. You need to use an adapter to perform this task: Ultimate Lavalier Microphone for Bloggers and Vloggers Lapel Mic Clip-on Omnidirectional Condenser on amazon.