Hi there,
I am Smithangshu. I am a C#.Net expert developer with 10 years of professional experience. If you allow me I can develop you the Windows Application to block the all the USB ports except KeyBoard and Mouse.
I have developed hundreds of Windows Application through out my career. Even here in Freelancer I have developed several Windows Application. You can find the feedback and description regarding those projects in my profile and portfilo respectively.
Please check my profile and portfolio here: https://www.freelancer.in/u/smithangshu.
Also, please don't hesitate to contact me so that we can discuss more about the project in details. I can guarantee you that you won't be disappointed.
I would request you to allow me a chance to prove myself to you.
Regards,
Smithangshu