2 drives installed on my Asus G72GX. 1 in primary disk, the other data disc. 4 months later the two died. Good thing I'm fairly regular backups on my WD MyBook. In short, I am extremely disappointed ... I would have liked the little red button ... And now I'll try to find an alternative, parsque frankly, I have no desire at all to take the risk of using such equipment. For me ABSOLUTELY STAY AWAY !!!