TranslateProject/translated/tech/20140609 How To Know If Your System Has USB 3.0 Port In Linux [Quick Tip].md

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如何在Linux中知道你的系统是否有USB 3.0 端口[快速技巧]
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Most of the new computers come with USB 3.0 ports these days. But **how can you know if your computer has USB 3.0 port** or not? In this quick tip, we shall see how to find if your system has USB 3 or USB 2 in Linux.
### 在Linux终端中检测是否有USB 3.0 端口 ###
打开一个终端,并使用下面的命令:
lsusb
这个命令会显示你系统下USB的总线信息。检查一下结果如果你看到像“3.0 root hub”字样这意味着你系统有USB 3.0。比如,在我的电脑上,它这样显示:
![How to find if system has USB 3.0 in Linux](http://itsfoss.itsfoss.netdna-cdn.com/wp-content/uploads/2014/06/Know_Usb3_Ubuntu_Linux.jpeg)
这个技巧在所有的Linux系统上像UbuntuLinux MintFedora等等都有效。现在当你知道你有USB 3.0 端口之后,**如何辨别哪个口是USB 3.0,哪个是USB 2.0。
### 辨别哪个口是USB 3.0 ###
通常USB 3.0 口被标记为SS“Super Speed”的缩写。如果你的系统制造商没有标记SS或者USB 3,那么你可以检查端口的内部通常是颜色的。
![find usb 3.0 port](http://itsfoss.itsfoss.netdna-cdn.com/wp-content/uploads/2014/06/usb3.0port.jpg)
我希望这个快捷提示能够帮助你知道你系统是否有USB 3.0 并可以分辨出USB 3.0 口
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via: http://itsfoss.com/find-usb-3-port-linux/
译者:[geekpi](https://github.com/geekpi) 校对:[校对者ID](https://github.com/校对者ID)
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