A connector that is connected to a mating connector includes: an outer housing; and an inner housing module fit in the outer housing. The inner housing module includes: a resin portion including an attachment portion and a base portion extending from the attachment portion; upper surface shield plates and side surface shield plates that are provided on an outer side of the base portion, and are electrically connected to each other; and a signal terminal provided on an inner side of the base portion, and the upper surface shield plates, the side surface shield plates, the signal terminal, and the resin portion are integrally formed.