A structure of an interface card connector includes a connector body and a plurality of terminals provided on the connector body. The bottom surface of the connector body is divided into a terminal zone and a space zone along the transverse direction. The distal ends of the terminals project from the terminal zone toward the bottom surface of the connector body. The space zone is recessed toward the connector body to form a notch portion, so that the bottom surface formed by the space zone is higher than that formed by the terminal zone. The space zone is used to provide a space for arranging the electronic components on the main board, so that more space on the main board is spared for the circuit layout. With this arrangement, the problem of the insufficient space and area of the main board can be solved.