== Keep in mind that adding the additional drive will require that you completely disassemble the Mac Mini. This is no small task and took me about an hour to complete fully. == That being said the before and after - 4GB Ram + 1TB spindle vs 16GB Ram 512GB 850 Pro SSD speeds are MONUMENTALLY different and WORTH THE EFFORT. Before: https://onedrive.live.com/redir?resid=A6... and after: https://onedrive.live.com/redir?resid=A6... I have added a Samsung 512 GB 850 Pro and 500 GB EVO drive with the fixit.com Kit and 16GB (2x8GB) corsair sticks of Ram to my October 2012 2.3GHz Mac Mini. I would say that all you need is the MB removal tool and a T6 and T8 and (T8 Security), though I think it is important that your tools be long bladed as a couple of times you are removing screws at an angle. The improvement is awesome and I use the EVO as the time machine drive. I am very happy with the kit though the walk throughs failed at key steps and they really should have a put it back together walk through rather than...