A card connector device capable of detecting mounting of cards in predetermined mount positions without the provision of metallic sheet pieces comprises a first switch for detecting that a first card and a second card have been mounted in predetermined mount positions and a second switch for detecting inhibition of writing on the first card and the second card, the first switch and the second switch, respectively, including a fixed contact composed of contact portions provided on a housing, a fixed contact composed of contact portions, and a moving contact, which acts as the first and second cards are moved to predetermined mount positions, the respective moving contacts comprising torsion coil springs.