The literature that came with my Data Doubler states that you will need a few additional components to install SSD when the HD is in the top slot. Watching the video from OWC http://eshop.macsales.com/installvideos/mac_mini2012_dd2_h/ I don't see/hear any extra parts? I installed the SSD and it does not show up in Disk Utility so It has to be a faulty connecter or SSD? I removed the fan, antenna and cowling and checked the connection. Lifted it up and re attached it. Seems fine? No results. I have an external 2.5 drive I can put the SSD in to see if it works and I can put the HD from the exterior drive in the mini to check the cable. It appears to be much easier to install the SSD in the bottom slot (less components to mess with). So, here is the question; What do I need to place the HD in the top slot as it would make my test procedures ( and future updates to the SSD) much simpler? Thanks.