Warning: Use of undefined constant title - assumed 'title' (this will throw an Error in a future version of PHP) in /data/www.zhuangjiba.com/web/e/data/tmp/tempnews1.php on line 152 usb无法识别常见的三大原因
- 分类：win8 发布时间： Warning: Use of undefined constant newstime - assumed 'newstime' (this will throw an Error in a future version of PHP) in /data/www.zhuangjiba.com/web/e/data/tmp/tempnews1.php on line 156 2013年03月16日 00:00:00
【usb无法识别】如今的usb设备越来越热门，越来越多人使用，几乎全部的设备都有usb使用，如摄像头、打印机、阅读机、mp4、mp3，但很多时候，我们使用usb设备却经常会出现故障。经常“无法识别的usb设备”的提示，那么为什么会出现此提示，如何解决呢？今天就由装机吧来告诉你。
一，前置的USB线接错。当主板上的USB线和机箱上的前置USB 接口对应相接时把正负接反就会发生这类故障，这也是相当危险的，因为正负接反很可能会使得USB设备烧毁。所以尽量采用机箱后置的USB接口,也少用延长线.也可能是断口有问题,换个USB端口看下.
二，拔插要小心,读写时千万不可拔出,不然有可能烧毁芯片。XP中任务栏中多出USB设备的图标，打开该图标就会在列表中显示U盘设备，选择将该设备停用,然后你再拔出设备，这样会比较安全。 其实判断软件硬件问题很简单,在别的机器或换个系统试试就可以了.有些小的问题不妨先用专门软件格式化下.还有提醒大家WINDOWS下格式化时要选择FAT,不要选FAT32。
三，6.无法识别的USB设备：Unknown USB Device. 很多人都遇到过的一个问题，所谓“无法识别”对于操作系统来说，或者是驱动程度有问题，或者是USB设备出现了问题，或者是计算机与USB设备连接出现了故障，解决问题的方法也是从这几处着手。 对于不同的设备会有不同的处理方法，了解USB设备正常工作需要的条件以及一些可能影响USB设备正常工作的因素，会有助于解决问题。
下面是保证USB设备可以正常工作的一些条件：
（1）USB设备本身没有任何问题——可以通过在其它计算机上进行测试，保证能正常工作；
（2）USB接口没有任何问题——可以通过连接其它的USB设备在此接口上进行测试；
（3）USB设备的驱动程序已经正确安装，如果有详细说明书的USB设备，一定要仔细查看相应的说明文件，按照说明安装相应的驱动程序；Windows 2000以后的操作系统以识别大部分的USB设备，Windows 98以前的操作系统可以安装USB设备自带的驱动或者安装通用的USB设备驱动程序。
责任编辑：装机吧小鱼 版权所有，转载请说明出处！
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电脑病毒知多少
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win8一键锁屏功能
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