Microsoft Windows 7 Professional, SP1, x64, 3pk, OEM, DUT. Software type: Original Equipment Manufacturer (OEM), License quantity: 3 user(s). Minimum hard disk space: 16000 MB, Minimum RAM: 1024 MB, Recommended RAM: 2048 MB. Language version: DUT. Minimum system requirements: DirectX 9 CD/DVD-ROM, Minimum processor: 1.0 GHz