Microsoft Windows 7 Professional, SP1, 32-bit, OEM, 1pk, DVD, ESP. Software type: OEM, License quantity: 1 user(s). Minimum hard disk space: 16000 MB, Minimum RAM: 1024 MB, Recommended RAM: 2048 MB. Language version: ESP. Minimum system requirements: DirectX 9 CD/DVD-ROM, Minimum processor: 1.0GHz