Hi, I am using an iMac (27-inch, Retina 5K, Late 2014) which has the 1TB Fusion Drive and the i5. I am planning to upgrade my mac with the Samsung 860 EVO 1TB SSD SATA and the i7-4790K to make it run faster, so is it possible to use the Samsung 970 EVO Plus to work on it? I heard it needs the latest firmware while it is plugged it with the special adapter. Has anyone tested the Samsung 970 EVO Plus SSD blade on an iMac (27-inch, Retina 5K, Late 2014)? If not, what could be a great substitute to use it?