Hi Cheryl, On my sblive card, the five jacks starting at the oblong socket and proceeding toward the top edge of the card are: 1. Rear speakers 2. Line out 3. Microphone 4. Line in 5. Digital I/O whose function is a mystery to me. Hope that helps. Chuck -- The Moon is Waning Crescent (31% of Full) Get my public key from website, http://www.mhonline.net/~chuckh
