Hi @Quadman , I've read your description on other forum (WBF) I hope you still remember what you were doing that time I suspect my problem could be 5V handshake which I don't have. DIO provide 3.3V only. I tried to connect but no reaction. Do you think I should just get 5V from digital board? BTW hdmi to I2S card doesn't work as well, when connected directly to DIO card.