I am trying to upgrade the bios on my K7S5A and I am not sure how to tell what revision I have. I only see K7S5A on my motherboard above the AGP slot. and right below the gold cmos chip. (or whatever it is). The ECS website says there is K7S5A PCB1.x , K7S5A 2 PCB 1.0/1.0A , K7S5A + PCB 1.0x, and K7S5A pro.