It fits perfectly in the place of my old hard drive connected via SATA 2 on my laptop which dates from 2008. I have not made any speed test, but that's enough for what I do. The facilities last only a few seconds instead of minutes. He is silent and does not heat up compared to my old hard drive. It is used, is partitioned and formatted like a regular hard drive. The opposite would have been boring. Its size is 240GB (223Go once formatted) so if you replace a 250GB (232Go formatted) is going to require a score reduction during cloning. I had trouble finding a free and reliable cloning software (including antivirus detects no threat) and I regret that it was not provided in or with the hard disk or on the manufacturer's website. In short, even if it was not to replace my old hard drive that démagnétisait, I think it still worth it for its performance.