Could u please tell how to go about searching for such a board..a usb port would also be helpful
That would be the cost. But no sweat, I found what I wanted, thanks!
See. You had "cost" as a selection criteria. Shouldn't you then also post the allowest price range when asking for help locating boards?
Price normally don't matter much when buying a single board for development. Maybe you are not looking for one board, but for a solution you can use in hundreds of installations? That would then also be information that you should have supplied in your initial post.