I bought this particular SSD to use as an external boot drive for my 2017 i5 5K 27" iMac. It was recommended by the software publisher Carbon Copy Cloner, which I use to clone my internal boot disk on this ssd. I first reformatted the ssd and then following the instructions cloned my internal boot disk to it. I was very disappointed with the performance, it was very slow, especially on startup. The next day I'm gone I've gone through the steps again and can say that when using the calculator it runs quite quickly, it still seems to take a bit longer for the calculator to boot up instead of the internal drive, but not too slow, so for the price I think it's worth it Money Also the seller was very accommodating.
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