A socket connector (1) includes a base (10), a cover (20), two operating members (60), a lid (30), and four coil springs (40) received between the lid and the base. The base defines passageways (1010) receiving terminals therein. Each operating member includes a first operating lever (601) engaged with the cover, and a second operating lever (602) engaged with the base. The lid is engaged with the operating members for pivotably moving the first and second operating levers thereby the operating members actuating the cover to move in a horizontal direction. When no external force is exerted on the lid, the terminals in the base permit zero insertion force insertion and removal of the leads of the CPU, and when the lid is vertically pushed down, the operating members actuate the cover to move relative to the base thereby connecting the terminals with leads of the CPU.