User Agent String.Com 

User Agent String explained :

Opera 9.63
Opera	Name : Opera
9.63	Browser version
Windows NT 5.2	Operating System: Windows Server 2003
U	Security values: N for no security U for strong security I for weak security
en	Language Tag, indicates the language for which the client had been localized (e.g. menus and buttons in the user interface) en = English
Presto	Layout engine for Opera
2.1.1	Version 2.1.1
Last visit:	2010.02.12 03:59
All Opera user agent strings