 It is the audio BFF. This is for cutie pie and jow boards, and it gives you both a micro SD card reader and an i2s 3 watt amplifier So it is perfect for plugging in a small speaker and Playing audio files with this just stuck right onto the belly side of a cutie pie There's a little micro SD card there with a bunch of audio samples from the video game portal Hello, and again welcome to the aperture science computer aided in Richmond Center Wait now and cake will be served immediately. What I can do is take that SD card out Grab a different SD card with different samples. I'm just gonna slide that in reset the code and now I have Totally different set of sound effects It is the audio BFF for cutie pie and jow