A card connector includes a tray having a side wall and a breach region formed on the side wall, a main body including a front opening for inserting the tray and a side portion defining a side of the front opening, a plurality of terminals attached to the main body, and a detective switch including a spring member that is attached to the side portion of the main body and includes a press portion configured to extend into the card-holding space of the tray through the breach region of the tray when the tray is inserted in the main body. A card connector can include a card locking element, and a card ejecting mechanism. The card ejecting mechanism can comprise an actuator movable between an outward position and an inward position and a levering member.