I have a "Cd-Rom drive 16bit I/F card " That I would to use in a older PC. I have done searches on evevery thing I can think of And went to the MITSUMI SITE [ THE CHIP IS A MITSUMI CR623803....9316W55 no FCC # , OTHER # 74-1645A and ku-03294v-on . I think it was used on a 2x cd player . anyone have any ideas