Trend Micro Client Server Messaging Security for SMB v3. License quantity: 25 user(s). Language version: ENG. Platform: Win32. Minimum hard disk space: 1500 MB, Minimum RAM: 512 MB, Minimum processor: Intel Pentium III 733 MHz. Compatible operating systems: Server: Microsoft Windows 2000 SP2, XP SP1, 2003, Microsoft Small Business Server 2000, 2003