A card socket for use in electronic devices is disclosed that can prevent the pushing of the card tray via vertical contact action of the detect terminal and switch terminal. The card socket includes a detection switch that is activated when a card tray has been inserted into the card tray insertion space of a housing in an insertion direction. The detection switch includes a detect terminal that is installed within the insertion space so that when the card tray is inserted into the insertion space the detection switch is activated. The detect terminal is configured to exert a force on the card tray in a direction that is perpendicular to the insertion direction.