A connector assembly includes a plurality of circuit boards and a bracket retaining the plurality of circuit boards. The circuit boards each have a plugging portion to be plugged into a mating connector and each have a first main face facing a second main face of an adjacent circuit board of the plurality of circuit boards. The bracket retains the plurality of circuit boards with the plugging portions facing downward and with each of the circuit boards capable of making a predetermined amount of independent movement in a pair of directions in a horizontal plane.