A connector assembly for a circuit board, comprising: a plurality of female connectors each configured to be individually mounted to a printed circuit board, wherein each female of the female connectors respectively having a predetermined number of pins configured to be connected to the printed circuit board; and at least one male connector having a plug terminal configured to be coupled with the pins of the plurality of female connectors, wherein the female connectors are configured to be successively assembled with each other along a first direction (+Y), wherein each of the plurality of female connectors has a hooking protrusion (12, 13) protruding in second direction (+X) perpendicular to the first direction bent in a third direction perpendicular to both the first and the second direction, wherein the hooking protrusion is bent on at least one of an upper end and a lower end of a front surface thereof to which the male connector is connected, wherein each of the at least one male connector has a hooking groove (22, 23) provided to be hooked with the hooking protrusion, characterized in that each female connector of the plurality of female connectors has a convex block formed at a first side surface thereof to protrude in the first direction and a concave groove formed at a opposite side surface thereof to be depressed in a shape corresponding to the convex block, and in that adjacent female connectors of the plurality of female connectors are removably connected to each other by sliding in the third direction the convex block of one female connector into the concave groove of an adjacent female connector. a plurality of female connectors each configured to be individually mounted to a printed circuit board, wherein each female of the female connectors respectively having a predetermined number of pins configured to be connected to the printed circuit board; and at least one male connector having a plug terminal configured to be coupled with the pins of the plurality of female connectors, wherein the female connectors are configured to be successively assembled with each other along a first direction (+Y), wherein each of the plurality of female connectors has a hooking protrusion (12, 13) protruding in second direction (+X) perpendicular to the first direction bent in a third direction perpendicular to both the first and the second direction, wherein the hooking protrusion is bent on at least one of an upper end and a lower end of a front surface thereof to which the male connector is connected, wherein each of the at least one male connector has a hooking groove (22, 23) provided to be hooked with the hooking protrusion, characterized in that each female connector of the plurality of female connectors has a convex block formed at a first side surface thereof to protrude in the first direction and a concave groove formed at a opposite side surface thereof to be depressed in a shape corresponding to the convex block, and in that adjacent female connectors of the plurality of female connectors are removably connected to each other by sliding in the third direction the convex block of one female connector into the concave groove of an adjacent female connector.