After the first startup I immediately noticed that the USB has 3 interface with my USB 3 hard drive is not working. Windows has simply not recognized. After a new installation of Windows 7 and a driver update for the USB 3 controller, I still had the same problem. The solution: the ASUS website an outdated driver for this device available (version 3.0.x) - This was with me after the first startup also active.
Anyone who has problems with the USB 3 interface, the latest drivers under
[...]
Download.
Then everything worked like a charm for me.