All the videos and stuff point that when you only have 1 drive in your mac mini it will be in the lower tray (when the mini is upright), held by the 2 pins and 2 screws from the antenna tray. However my brand new late 2012 mid level mini had it in the upper tray attached with 4 screws, through 4 grommets. Has anyone else seen this? I want to add a second drive but all the standard kits include the grommets and the screws and the cable for the upper tray, however I need the alignment screws/pins and the cable for the lower tray. Any ideas?