I bought this SSD 850 GB Samsung SSD to replace the 128GB already in my computer, but often in saturation. The shipping and fast delivery did not pose much difficulty. This was not the case for getting started: Samsung does not provide the Cable Sata / USB to connect the SSD to the computer: it must be ordered, or 4 weeks of delays for 2.79 euros is especially sold for a paltry 179 euros device. I would have preferred to pay 182 euros rather than waiting. The most difficult was the commissioning in the computer: the migration with the Magician software, supplied with the SSD did not work and I had to reinstall the original SSD, with great difficulty to revive the computer .. Fortunately, by consulting the Internet, I found a nice contributor who helped me get out of this mess. After cloning the SSD 128, with the original software "EaseUS Todo Backup Home, free for 15 days. With the cloned SSD 850, installed in the computer, it was restarted as before. Phew! The hardware is functioning properly but zero points to Samsung for its zero documentation and stinginess!