I bought this particular SSD to use as an external boot drive for my 2017 i5 5K 27" iMac. It was recommended by the publisher of the Carbon Copy Cloner software, which I used to clone my internal boot disk to this SSD. I first reformatted the SSD and then cloned my internal boot disk to it according to the instructions. I was very disappointed with the performance, it was very slow, especially on startup. The next day I've gone through the steps again and can say that it runs pretty fast using the computer, it still seems to be taking a bit longer for the computer to boot up instead of the internal drive, but not too slow, so I think , for the price it is worth the money. Also the seller was very responsive.
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