USB 3.0插座示意图
USB 3.0插座是可以向下兼容USB 2.0的,相对于旧插座来说,USB 3.0插座增加了5pin的金属触片,对应USB 3.0线缆中A型接口的USB3_TX、GND以及USB3_RX触片。![](http://www.oimai.com/usb3.0/upload/2010/5/201005041043525002.jpg)
![](http://www.oimai.com/usb3.0/upload/2010/5/201005041043525481.jpg)
![](http://www.oimai.com/usb3.0/upload/2010/5/201005041043531580.jpg)
![](http://www.oimai.com/usb3.0/upload/2010/5/201005041043532022.jpg)
![](http://www.oimai.com/usb3.0/upload/2010/5/201005041043531405.jpg)
![](http://www.oimai.com/usb3.0/upload/2010/5/201005041043534184.png)
![](http://www.oimai.com/usb3.0/upload/2010/5/201005041043525002.jpg)
![](http://www.oimai.com/usb3.0/upload/2010/5/201005041043525481.jpg)
USB 3.0插座示意图及实物图
![](http://www.oimai.com/usb3.0/upload/2010/5/201005041043531580.jpg)
![](http://www.oimai.com/usb3.0/upload/2010/5/201005041043532022.jpg)
USB 3.0 A型接口示意图以及实物
USB 3.0线缆A型接口触片增加到了9pin,其中下方的4pin可兼容旧有的USB 2.0/1.1/1.0标准,而后方增加的5pin则属于USB 3.0,分别为USB3_TX、USB3_TX、GND、USB3_RX及USB3_RX。
![](http://www.oimai.com/usb3.0/upload/2010/5/201005041043531405.jpg)
USB 3.0标准B型接口以及Micro-B接口示意图
USB 3.0标准的B型接口如上图所示,主要连接外设使用,具备4pin+5pin金属触片。标准B型接口外形较为“方正”,而Micro-B型接口则较扁,主要用于体积较小的设备,如MP3、手机、数码相机等。
![](http://www.oimai.com/usb3.0/upload/2010/5/201005041043534184.png)
关键词: USB 3.0 插座 USB3_TX GND USB3_RX
![](https://webstorage.eepw.com.cn/images/2014/m/wx.png)
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