Housing is the hammer! Except for a few little things ...

Why I forgive but 4 stars I explain below.

The two side 80mm fan, which are transporting the HDD heat directly to the outside, I have not even connected, since I have installed 1 anyway only 1 hard disk and 1 SSD and I have 2 read that this should be a bit noisy.
No wonder, since these two fans have a 4-pin Molex connector that is known of old IDE hard drives and they are not regulated in the speed.
Exactly the same at the illuminated 120 front fan that supplies the HDD with fresh air. Even this has this port and can not be regulated.

The situation is different at the 120 lighted fan on the ceiling of the housing. This has a 4-pin, adjustable PWM connector and if it is correctly set very quiet and looks good too.
The 120mm fans at the rear of the housing has a 3-pin plug, not lit, but when it is set correctly also very payable.

As I sought to build a very quiet computer and the front fan was really listening to me, I have expanded this and the blue fan of the housing cover installed at this point, which is so regulated.

Now all fans can be controlled and it is possible to guarantee an individual ventilation that is optimized volume-either good ventilation, or. With me so works extremely quiet cooling, with good temperatures. (CPU about 30 degrees and about 55 degrees below Idle long full load)

To the cooling nor can optimize something to replace the missing ceiling fan with a new, adjustable 120mm fans. If necessary, you can even install the same again next since found on the ceiling 2 120mm fan space.

By the way I wanted to mention that for me the PC first not started off until I realized that the reset button and the on / off button each have a connector on the cable, which is located behind the front cover and unplug me from working was.

All in all, I would buy the housing there again, but the fans also convert again as described above.
The star trigger there because of the unplugged on / off plug and because of the non-controllable fan.