Card connector

The present invention provides a card connector, in which a connector housing 30 is formed with a pair of guide grooves 50a, 50b that support the both side edges of the upper body portion 21 of the thick first card 20 and also the both side edges of the card body 11 of the thin second card 10 and guide these cards as they are inserted or extracted, and a space below a space between the paired guide grooves 50a, 50b to accommodate the lower body portion 23 of the first card 20. This construction ensures that, whichever of the first and second cards is inserted, the elastic displacements of the contact terminals 40 remain the same, allowing two cards to be electrically connected stably.