There are 4 different generations of system 11 boards. The 11, 11a, 11b, and 11c. Yours looks like it is the 11. This was the first generation, and it still had the led digit for the status board. They didn't go to the 3 led system untill 11a. Your machine should have come with an 11a, but with a few minor mods, the 11 board will work in place of an 11a.