Quiet, fast and good.

+ Fit therefore complies with the standard, built-in with no problems.
(Put it in a HP EliteOne All-in-One display system installed)
+ No loud roar at system startup.
Play + No loud noises while running music or movies.
+ Come on firing with all CD / DVD-R / RW clear.
(The speed values ​​given are complied with)
+ If the play with all CD / DVD's clear.

Unit is now for about 5 months in operation and has not caused any problems ...
In short, power without grumbling and growling exactly what it promises.