I bought this particular SSD to use as an external boot drive for my 2017 i5 5K 27" iMac. The software publisher, Carbon Copy Cloner, recommended it for cloning my internal boot drive 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 at startup. The next day I went through all the steps again and can say that it works quite quickly when using the computer. It still seems to take a little longer to boot up than the internal drive, but not too slow. Overall I think it's worth the money for the price the seller was very responsive.
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