Abstract: An electrical connector includes an insulative housing, a plurality of contacts retained in the insulative housing and a fastener. The insulative housing has a rear surface. Each contact has a connecting leg extending beyond the rear surface. The connecting legs are arranged in at least a row, and each connecting leg has a connecting portion and a resisting portion. The fastener has at least a contact receiving chamber, a flexible circuit board receiving chamber communicating with the contact receiving chamber and a press section. The contact receiving chamber is arranged between from the flexible circuit board receiving chamber and the press section. Wherein the fastener has a fixed position on the insulative housing, and as moving the fastener to the fixed position, the press section presses the resisting portion to drive the connecting portion projecting into the flexible circuit board receiving chamber.