I did not have to replace anything. The Samsung 860 EVO swapped out seamlessly with the existing hard drive, with no additional cables necessary.
Indispensable guide. I used it and the iFixit tools in conjunction with a YouTube video and the process was scary but surprisingly easy. (After all, I understand these things are originally assembled by 10-year olds.) I swapped out the 500gb hard drive on my infuriatingly slow late 2014 Mac Mini with a 500gb Samsung 860 EVO SSD and I am frankly astonished at the gain in speed. It is like having a brand new computer. I spent less than $150, including the drive and the iFixit tools. Far less cursing in my house now, I thank you for such a clear, concise guide.
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