I am replacing the fan in a Macintosh Classic. The fan is on the bottom of the machine. When I pulled the old fan, I found it was set to pull air INto the machine, rather than blow it out. With the fan being on the bottom of the machine, that makes sense. But when I found a drawing of the Classic with all parts in blow-up, the fan looked to be oriented witht he exhaust blowing out. To me, it makes more sense to have the fan’s exhausted blowing IN since this fan is on the bottom of the machine. The air would be hitting the logic board. So, …is this correct?