Panda Antivirus Pro 2010, 1 PC 1 Year, DVD Case. License quantity: 1 user(s), Number of years: 1 year(s). Platform: PC. Minimum hard disk space: 265 MB, Minimum RAM: 512 MB, Minimum processor: Intel Pentium 300 MHz. Compatible operating systems: Windows XP 32-bit Windows Vista 32/64-bit