Abstract: The flexible flat cable has an insulating base film, at least two sets of conductor groups and an insulating cover layer for covering the conductor groups. An end of the cable has, on one surface thereof, conductor contact areas formed by directly and partially exposing conductors of the conductor groups or partially exposing conductor area electrically connected to the conductors. The conductor contact areas are aligned along the width of the cable for each conductor group. The connector for connecting the cable has a connector body and a retainer plate and pinches the cable between the connector body and the retainer plate and contacts the conductor contact areas of the cable to the corresponding contacts on the opposite sides of the connector body to make electrical connection therebetween.