Hi Arthi, Thanks for the reply, Just to confirm i am using 5_00_01 version MSP USB developer package. Yes i have not seened the .cat file. As you told i copied the C1 projects USB config folder files which has .cat file to another folder and created the new file using descriptor tool and copied all the files to USB config folder (in which .cat file is not there). Is it necessary to keep the .cat file as it is in that folder or not required. Please confirm. I tried without .cat file placed in USB config folder, it gave error as mentioned yesterday. Secondly i have one more thing i.e. i have evaluation board and my custom board, Is there any problem if i use the same project and driver(config folder) for both? My evaluation board MSP-TS430PZ100USB works file for C1 project if i do nothing. But when i change PID its not working as mentioned yesterday. My custom board has HUB controller and i am getting Unknown device on connection, if i observe the USB log using analyzer it shows device enumeration failed. Please can you help me what could be the issue here, same driver could be the issue( same .inf file)? Need help thanks in advance Nitesh
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