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[Translated]20140609 How To Know If Your System Has USB 3.0 Port In Linux [Quick Tip]

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How To Know If Your System Has USB 3.0 Port In Linux [Quick Tip]
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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.
### Check if you have USB 3.0 in Linux terminal ###
Open a terminal and use the following command:
lsusb
This command displays information about USB buses in your system. Check the result, if you have something like “3.0 root hub”, it means your system has USB 3.0. For example, for my new notebook, it shows:
![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)
The quick tip will work on all Linux systems such as Ubuntu, Linux Mint, Fedora etc. Now when you know that you have USB 3.0 port, **how can you identify which port is USB 3.0 and which is USB 2**.
### Identify which port is USB 3.0 ###
Usually USB 3.0 ports are tagged as SS (abbreviation for Super Speed). If your system manufacturer has not tagged it as SS or USB 3, you can check the interior of the port which should normally be of blue color.
![find usb 3.0 port](http://itsfoss.itsfoss.netdna-cdn.com/wp-content/uploads/2014/06/usb3.0port.jpg)
I hope this quick post helped you to find if your system has USB 3.0 or not and then to identify the USB 3.0 port.
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via: http://itsfoss.com/find-usb-3-port-linux/
译者：[译者ID](https://github.com/译者ID) 校对：[校对者ID](https://github.com/校对者ID)
本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出

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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Ubuntu，Linux Mint，Fedora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)
本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出