An electrical connector includes a socket, a stiffener disposed around the periphery of the socket, and a load plate covering the socket. The load plate includes two opposite lateral sides, and a front side and a rear side connected to the two lateral sides, which define an opening for a chip module to pass through. The rear side includes a pivoting portion, such that the load plate is rotatable relative to the socket around the pivoting portion. Each lateral side includes a first pressing portion and a second pressing portion in front of the first pressing portion. When the chip module is installed onto the socket and the load plate is closed, the first and second pressing portion press the chip module, and distances from bottom surfaces of the first and second pressing portions to a top surface of the load plate is unequal.