Abstract: A sealable, latchable door assembly for use with a hand-held, portable electronic device that has a housing adapted to removably receive a memory card in a receiving chamber through an opening. The door assembly includes a door shaped and sized to removably cover and seal the opening in the housing to retain and protect the memory card. The door has an engaging face adapted to sealably engage the housing around the opening. A connecting member attached to the door is slidably mounted within the housing to allow the door assembly to be slid between an extended, disengaged position and a retracted position with the door in a closed, sealed position. A latch attached to the door is adapted to releasably engage the housing to secure the door in the closed, sealed position. A hinge connected between the door and the connecting member enables the door to be pivoted downward to an open position to allow uninhibited passage of the memory card through the opening in the housing.