Audio-Technica ATR2500-USB - Manual (Page 4)

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1. Plug the free end of the provided USB cable into the USB port on your computer. The microphone’s
blue LED will illuminate, indicating the microphone is receiving power.Your computer will
automatically recognize the USB device and install a driver.
2. To select the ATR2500-USB as your audio input, first, open your System Preferences .
Preliminary setup with Mac OS X