Kaspersky Lab Anti-Virus 2009 OEM, 3-Desktop 1 year Subscription, 10 Pack (PC). Software type: OEM, License quantity: 3 user(s), Number of years: 1 year(s). Minimum hard disk space: 50 MB, Minimum RAM: 256 MB, Minimum processor: 300 MHz. Compatible operating systems: Microsoft Windows XP Home / Professional,