Bitdefender Internet Security 2012, 1u, 1Y. License quantity: 1 user(s), Number of years: 1 year(s). Platform: PC. Minimum hard disk space: 1843 MB, Minimum RAM: 1024 MB, Minimum processor: 800MHz. Compatible operating systems: Windows XP SP3 (32-bit) Windows Vista (SP2) Windows 7 (SP1)