Opera@USB顾名思义就是存贮在U盘里的浏览器，把下载的Opera-USB程序解压放在自己的U盘中即可，好处是:
1、机动性强，随身携带自己习惯的浏览器和浏览方式
2、私密性好.把你浏览的地址留在U盘上，而计算机里不留下任何访问痕迹和数据
3、共存性，可以和IE和FireFox和平共处下载: Opera@USB 9.62 Build 10467

How to do the update:
- to find the Opera@USB or Opera@U3 Folder enter Opera:About in URL
- extract the zip file directly into the Opera folder and overwrite the (old) files
The OperaUSB-Update file includes all new updated files - the new version doesn't need more space than old Version !