F-SECURE Internet Security 2011, Win, CD, 1u, 1Y, ML. Software type: Box, License quantity: 1 user(s), Number of years: 1 year(s). Minimum hard disk space: 600 MB, Minimum RAM: 128 MB, Minimum system requirements: Internet Explorer 6.0+ CD-ROM. Compatible operating systems: Windows 7 Windows Vista Windows XP Home Windows XP Professional Windows XP Media Center