12 unknown Revy board with heat sink and green base. Used shape. I'm guessing this is mid generation. No battery plate. Heat sink is bent and has corrosion at back corner. Speed is likely medium? I have one of these heat sink styles in a hopper but it's slightly different but is fast but not x board fast? Red light. This style may have had problems with light readings while feeding according to Warpig? Tested and works.