A memory card connector has an insulative housing, a power switch and a plurality of conductive terminals. The power switch is mounted in the insulative housing, to detect a memory card and has a first detecting terminal and a second detecting terminal. The first and second detecting terminals are mounted in the insulative housing. The second detecting terminal selectively contacts the first detecting terminal to supply power to the memory card connector when the memory card is installed in the memory card connector. When the memory card is removed, the power switch cuts the power to the memory card connector to save power.