MIC_RET and OUT_RET are for HD audio only; you don't need to connect them for AC'97 audio.<BR><BR>Note: Intel does not validate AC’97 front panel audio solutions with boards using HD audio.

My plan is to build a connector to go from the AC'97 front panel header on the motherboard to a pair of panel-mount RCA jacks on an unused PCI slot blank.<BR><BR>I've already got the 10-pin ...