User Agent String.Com 

User Agent String explained :

Opera 11.11
Opera	Name : Opera
9.80	Opera version -> old version, for compatiblity reasons only. See Version below
X11	X Window System a windowing system for bitmap displays
Linux i686	Operating System: Linux running on a Intel Pentium Pro CPU
U	Security values: N for no security U for strong security I for weak security
ru	Language Tag, indicates the language for which the client had been localized (e.g. menus and buttons in the user interface) ru = Russian
Presto	Layout engine for Opera
2.8.131	Presto version
Version	Browser version
11.11	Version 11.11
First visit:	2011.06.15 11:16
Last visit:	2020.12.23 02:42
All Opera user agent strings