A portable electronic apparatus, the apparatus comprising: a main body (100, 500, 600) formed with an opening (119, 619) on a surface thereof; a plurality of connection ports (118a, 318) disposed to be exposed through an opening of the main body; a door (120, 320, 520, 620) 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, wherein the door (120, 320, 520, 620) includes a cover and rotating blades extended from both ends of the cover; characterized by further comprising: a moving mechanism formed to move the connection ports (118a, 318) in a direction to be protruded from the opening (119, 619) when the door (120, 320, 520, 620) is rotated to the second configuration, and configured to be operated in conjunction with being pressed of the door (120, 320, 520, 620); and wherein the moving mechanism comprises: a guide member (220, 420) having a guide rail, mounted on the main body; and a housing (210, 410) mounted with the connection ports (118a, 318), slidably connected with the guide rail, and formed such that a force exerted to the door (120, 320, 520, 620) is transferred, wherein the rotating blades of the door (120, 320, 520, 620) are rotatably mounted to a protruding portion of the housing (210, 410), and a locking mechanism formed such that the connection ports (118a, 318) are locked, in the second configuration, in conjunction with the rotation of the door (120, 320, 520, 620) by a surface of a rotating blade of the door (120, 320, 520, 620) being locked in an end of the guide member (220, 420) to prevent a sliding movement of the door (120, 320, 520, 620) and to limit the movement of the connection ports (118a, 318) in a direction to be inserted into the opening (119, 619). a main body (100, 500, 600) formed with an opening (119, 619) on a surface thereof; a plurality of connection ports (118a, 318) disposed to be exposed through an opening of the main body; a door (120, 320, 520, 620) 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, wherein the door (120, 320, 520, 620) includes a cover and rotating blades extended from both ends of the cover; a moving mechanism formed to move the connection ports (118a, 318) in a direction to be protruded from the opening (119, 619) when the door (120, 320, 520, 620) is rotated to the second configuration, and configured to be operated in conjunction with being pressed of the door (120, 320, 520, 620); and a guide member (220, 420) having a guide rail, mounted on the main body; and a housing (210, 410) mounted with the connection ports (118a, 318), slidably connected with the guide rail, and formed such that a force exerted to the door (120, 320, 520, 620) is transferred, wherein the rotating blades of the door (120, 320, 520, 620) are rotatably mounted to a protruding portion of the housing (210, 410), and a locking mechanism formed such that the connection ports (118a, 318) are locked, in the second configuration, in conjunction with the rotation of the door (120, 320, 520, 620) by a surface of a rotating blade of the door (120, 320, 520, 620) being locked in an end of the guide member (220, 420) to prevent a sliding movement of the door (120, 320, 520, 620) and to limit the movement of the connection ports (118a, 318) in a direction to be inserted into the opening (119, 619).