Motherboard Pin 1: AUD_MIC1 Pin 2: AUD_GND Pin 3: AUD_MIC2 Pin 4: AUD_VCC Pin 5: AUD_FPOUT_R Pin 6: AUD_RET_R Pin 7: AUD_MIC_JD Pin 8: NO PIN Pin 9: AUD_FPOUT_L Pin 10: AUD_RET_L Case Pin 1: MIC Pin 2: GND Pin 3: MIC BIAS Pin 4: AUD GND Pin 5: FPOUT R Pin 6: RET R Pin 7: +5V Pin 8: NO PIN Pin 9: FPOUT L Pin 10: RET L I'm 99% positive all pins match except pins 3, 4 and 7.