This USB audio capture card converts analog music from cassette tapes or CDs to digital MP3 format. It comes with Audacity editing software and is compatible with Mac and Windows operating systems. The device has a USB 2.0 interface, stereo audio input, and is powered by USB bus power. It includes a 3.5mm audio connector, software CD, and quick installation guide. To use, simply install the application software, connect the device to an analog audio source and your computer, and open Audacity to capture and edit your audio files.