Replacing my Mac Mini hard drive this weekend, and after following this great walkthrough, I only stumbled on one point – I couldn’t find the fan control wire.
The walkthrough I used, and most others indicated it was located at the front of the machine, but as you can see below, it isn’t there 😦
I did however find a trailing wire stuck to the hard drive which plugged into the SATA interface, I had to remove this to remove the hard drive, and thinking it was just a drive activity indicator, discarded it.
Upon rebuilding the Mac Mini with the new hard drive I find the fan is running full speed constantly. Anyway I suspect then that that wire I discarded may be important, retrieve it from the old hard drive and find that it’s only stuck to the hard drive.
I peel it off and reattach it to the SATA interface, rebuild, and find my Mac Mini back to it’s usual silent self.
The little black plugin, fan control cable, can be seen below, just to the right of the shiny gold SATA cable.
My Mac Mini is a late 2009 model, so I’m guessing they changed the internal architecture quite recently.