Thank you so much for the info. I did try swapping cables because this happened before. No luck.Usually, if USB port is not recognized, try to change the connection cable. If it does not solve the problem, go to Control panel and check COM ports appearing/disappearing if you connect/disconnect board. If COM port appears by connecting the board but Arduino IDE does not recognize port then try to reinstall Arduino drivers.
by Aaron Carman
by Jake Hertz