replace a hardrive Mac (Retina 5K, 27-inch, Late 2015)
I need a new hard drive for my Mac (Retina 5K, 27-inch, Late 2015)
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2012 to current iMacs are not user upgradeable except for 27" model's RAM. I would recommend using a USB 3 external SSD, this would be the easiest and most cost effective method. You could take the computer to your local Apple Authorized Service Provider however most go the external SSD route.