This SSD replaced my previously purchased Kensington which kept losing the MBR and lost connection to the MB on my laptop. Got the Kensington due to the low cost, but this was a reminder that buying cheap will cost you more. The Samsung 870 EVO is a solid hard drive (excuse the pun), OS boots up fast and no disconnection from the MB ever since. This is really not a high price for such a quality drive, I should have gotten this from the start.