3 j8 – amplified differential audio out, left, 4 j9 – amplified differential audio out, right, 5 j10 – differential microphone in – Kontron SMARC Evaluation Carrier User Manual

Page 19: 6 j11 – line level audio out, J8 – amplified differential audio out, left, J9 – amplified differential audio out, right, J10 – differential microphone in, J11 – line level audio out