What a PITA that was! Two issues.... First - There is a power cable for the larger antenna (Airport Extreme?) that pulled off and didn't remember seeing any mention of it in the write-up I read (reattached to the 'Main' post, not 'auxiliary'). Since I don't use wireless no way of knowing if I connected to the right post. Second - Even after two attempts, I could NOT get the back panel to line up without a slight gap on the power button side. It's roughly .25mm higher for some reason. Everything else works fine and the Mini is now running my MBP's old memory (free upgrade woohoo!). Also of note, the OE 1gig that I removed is a brand I've never heard of (don't have the chips in front of me) which I thought was a little odd.