USB Safely Remove 4.2 resolves that problem allowing you to fix drive letter to a device. Just open your device properties, switch "Drive properties" tab, choose required drive letter and check "Fix drive letter". Starting from this moment your devic

实现学习板通过USB端口与PC机通信，用户通过端点1(EP1)发 送0x11将启动ADC转换并将采样结果通过EP1发送给PC机， 用户通过EP1发送0x99停止ADC转换-The achievement of learning board with the PC through the USB port communication, the user through the endpoint 1 (EP1) Send 0x11 to start sampling and ADC co