Second order efficiency

A card connector which permits insertion of a card from a side of an insulator thereof is provided. A protruded portion is formed on the bottom of a rear end of a slider movably accommodated with a hollow insulator. When the slider is moved in the direction of insertion of a card (miniature card) to bring a recessed terminal array portion of the card to a position exactly above a protruded terminal array portion of a circuit board, the protruded portion is caused to drop into a recess formed in a bottom wall of the hollow insulator to thereby incline the slider with respect to the direction of insertion of the card to fit the recessed terminal array portion of the miniature card on the protruded terminal array portion of the circuit board. The slider is urged against the bottom wall of the hollow insulator by a spring, and urged toward an insertion opening of the hollow insulator by another spring. An ejector button is arranged in the hollow insulator for returning the card to a level position.