The ASI5812 is a professional PCI Express audio adapter designed for use in radio broadcast FM MPX generation. The adapter offer two stereo record streams from either a balanced analog input or AES/EBU digital input and four stereo play streams mixed to a balanced analog output and two AES/EBU digital outputs. The second AES/EBU output includes a Sample Rate Converter (SRC) and independent sample rate clock.

The adapter also includes GPIO in the form of four opto-isolated inputs and two relay isolated outputs.