I have an old case, can't remember make and model, no useful marks on it, might be OEM. Anyways it has this side panel with av ports including RCA composite, left & right audio as well as S-Video. Those are all bundled to an unknown 10 pin internal header. Wondering if anyone has seen something similar and if so, how to make them functional? What kind of expansion card do I need to add that header, or even a different pinout I could splice?