Disclosed is a portable electronic apparatus including a main body formed with an opening on a surface thereof; a plurality of connection ports disposed to be exposed through an opening of the main body; a door disposed on the opening to be rotated between a first configuration that covers the connection ports and a second configuration that opens the connection ports; a moving mechanism formed to move the connection ports in a direction to be protruded from the opening when the door is rotated to the second configuration, and configured to be operated in conjunction with being pressed of the door; and a locking mechanism formed such that the connection ports are locked in the second configuration in conjunction with the rotation of the door to limit the movement of the connection ports in a direction to be inserted into the opening.