An electrical card connector (100) includes an insulative housing (1), a number of contacts (2) retained in the insulative housing, a metal shell (3) covering the insulative housing for defining a receiving space, a slider (4) moveably assembled on the insulative housing, a spring member (5) biasing the slider, and a pin member (6). The slider includes a base portion (41) and an actuating portion (42) sidewardly protruding from the base portion into the receiving space. The slider has a guiding slot (410), an inner heart-shaped slot (411) connecting with the guiding slot, and an outer cam slot (412) connecting with the inner heart-shaped slot. The pin member has a first end (61) secured to the insulative housing and a second end (62). The second end is normally guided in the inner heart-shaped slot but guided to the outer cam slot when a card is improperly inserted.