Beautiful Machine - quiet, fast and well built

The PC was received very quickly, as usual with Amazon. I installed Windows 7 and the Windows 8 upgrade, and added a 4 TB disk in order to have local storage. The addition was done without problem; the machine is well built, quiet and efficient (index 5.6 I think). It is ideal for those who have a home or NAS shared storage, add a disk otherwise. The only problem: 2 of my USB external drives do not work; we must find a USB cable suitable for them to be supplied: it works with some cables and not with others.
The PC is really quiet, I recommend it for office use ++ (photos, ...) I have not tried video editing; it may be necessary to increase the RAM: replace two current bars to move to 8GB, see.