The first round of SEs did have that fan. It was found to be noisy so Apple issued a "silent" recall and replaced the fans with the standard box fans. If you look at the board, you can see it has mounts for both styles. So someone at Apple was thinking. Remember the SE was the first compact with a fan. With the recall, the squirrel fan units are a little harder to come by. But since the SE was a well sold machine in bulk, its not hard to come across a large quantity from a university, or such, that still have the original fans. I think the first one I saw was a couple years ago, before that never an SE with one. Now I have several.