Trend Micro Client Server Security for SMB 3.5 (ML) Renewal 20 users. Software type: Box, License quantity: 20 user(s). Language version: Multilingual. Platform: Win32/64. Minimum hard disk space (server): 800 MB, Minimum hard disk space (client computer): 80 MB, Minimum RAM (server): 512 MB. Compatible operating systems: Server: Microsoft Windows 2000 (SP2+)/ Windows 2003 Server /Windows XP (SP1+)/ SBS 2000 / SBS 2003