Got a used video card, I'm told SVGA. Most of the chips are Realtek, one big one is Winbond. There is 512K RAM on board, and three jumpers. JP 1 & 2 are two pin jumpers, top middle on the card, while JP 3 is at the bottom right near the back, and has 3 pins. What is this card, and what are the various jumper settings? There is no name on the card, and the part number PT-507A.