When I plug your Base Shield V2 into Arduino DUE

Products & Technology Shields
2
Hello,
In principle, the base shield is just an interface panel with no other components, so it can not affect your serial port. You may touch some pins when you plug the board while the power is on. Why not reset the board as well as the Arduino IDE? (And I'm wondering if you can find the port in the device manager)

Thanks

best rgds
Mancy