What is the iMic? Is it a microphone? (PC)
The iMic is not a microphone, but rather an Input/Output device using a 3.5mm jack, that lets you connect standard audio products such as microphones, headphones, home stereo equipment, VCRs, musical instruments and virtually any other line-level or mic-level audio device. It's basically a "sound card on a cable", which allows you to record and play digital audio using your USB-equipped PC. Some Windows machines rely on USB for complete audio support; others (such as some laptops) have limited or no audio hardware. In these cases, the iMic can be used for audio input and output.