User Agent String.Com 

User Agent String explained :

Opera 10.00
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 x86_64	Operating System: Linux running on a Intel CPU running on a 64 bit processor
U	Security values: N for no security U for strong security I for weak security
de	Language Tag, indicates the language for which the client had been localized (e.g. menus and buttons in the user interface) de = German
Presto	Layout engine for Opera
2.2.15	Presto version
Version	Browser version
10.00	Version 10.00
First visit:	2009.07.23 03:45
Last visit:	2023.09.09 02:14
All Opera user agent strings