Hi Dan, I have iMac 27inch Retina 5k 2015 with 1TB SATA installed. I would like to replace it with Samsung 850 Pro 500GB SSD. Since my iMac came with SATA drive, i think i don't need to buy connector and power cable. I would need to buy adapter caddy and digital thermometer. Also when you removed and reinstalled back display, did you replaced the adhesive strips?