这是ddk 中的一个coinstall可实现自安装，请参考ddk说明编写inf文件来安装-This is a DDK coinstall can achieve self-installation, please refer to the preparation of DDK Descr iption inf file to install

类协安装驱动示例，使用类协安装可解决WindowsXP系统下换USB口需要重新安装驱动的问题-Class co-install the driver sample, using the class co-installed systems to resolve WindowsXP USB port for the problem to re-install the driver