Must be at least 1 year 1/2 it is mounted on my laptop, never had a problem with, nothing but happiness :) Lacks a little room above but that's enough for a triple boot (windows and linux 2) being my datas on the old HDD that I fitted in place of the DVD player (with a not very expensive kit). Perfs level of the computer is really a big difference for me, with a processor that works well gain time and fluidity is ensured over conventional HDD.