connection port an exterior casing overlying the port and having a casing opening in axial alignment with the port a door member displaceable mounted on the computer the door member having a plurality of translationally displaced operating positions comprising a first operating position with the door member positioned in the opening with an exterior surface thereof flush with a circumscribing surface of the exterior casing a second operating position with the door member axially aligned with and inwardly displaced from the opening and a third operating position with the door member axially offset from the opening application_number US 58345300 A description fig1 4 illustrate a computer 10 having a top portion 12 a bottom portion 14 a front portion 16 a rear portion 18 a left side portion 20 and a right side portion 22 the computer has an interior sheet metal housing 24 having a front face portion 26 as best illustrated in fig1 an electrical connector port assembly 30 is provided in an opening in the sheet metal housing front face portion 26 the electrical connection port assembly may also be provided at either of the side faces the rear face or the top face portion of the housing 24 as well as at the location illustrated in the drawing the electrical connector port assembly 30 may comprise one or more electrical connectors of any type such as audio port 32 usb ports 34 36 and microphone port 38 illustrated in fig1 an exterior casing 50 which in the illustrated embodiment includes integrated.