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,火狐和平共处.Portable Opera @USB International Version：
You want to use all opera features mobile - no problem !
- there are no unwanted effects on IE or other browsers
- existing opera versions are also not affected
- make no entries to the registry
- leave no data on the guestcomputer
What do i need for Opera@USB ?
- a computer with an internet connection
- a USB-Stick / USB Flashdrive with about 8 MB space left
官网：http://www.opera-usb.com
下载:Opera@USB v9.23