I'm currently doing a project on MSP430F5638. I want to implement USB on it. I got the code from TI website,(I am running the M2_SDCardReader example that came with version 4_20_00 of the USB Developers Package.) but while running this code I am facing some problems. If I run the code I can see unknown device(after calling the function usb_conncet) in my system for a moment, then its disappearing. I used descriptor tool to assign the VID and PID as mentioned in the guide provided by TI. how can i solve this problems..????? Do you have any suggestions?