小型的usb库libusb，通过usb库，通过libusb的接口函数，应用程序可以直接跟usb设备打交道。-Small usb library libusb, through the usb library, through the libusb interface functions, the application can deal directly with the usb device.

linux 下3G上网卡移植到arm板子所用到到软件-3G network card under linux ported to the arm board of the software used to