The drive is awesome and fast. I replaced an old m.2 drive with this one and love the speed increase. The heatsink is a little big and almost rests on top of my graphics card. I was able to use Clonezilla to copy my old drive to the new drive. If you need to copy an existing OS drive to this new M.2 drive, I suggest Clonezilla as it's free, it's been around for a long time, it's relatively easy to use, and it works with M.2 drives. There are easy-to-understand instructions for this.