A card connector (100) includes an insulative housing (2), a number of terminals (3) retained in the insulative housing, a metal shell (1) covering the insulative housing for defining a card receiving space, a switch unit comprising a moveable contact (4) retained in the insulative housing and an immoveable contact (14) integrally extending from the metal shell, and a support plate (233) pivotally assembled on the insulative housing. The immoveable contact includes a contacting portion (142). The moveable contact is cantilevered above the contacting portion of the immoveable contact for detecting an electrical card. The support plate is rotatable to be located beneath the contacting portion of the immoveable contact.