An electrical connector assembly includes a front housing that has a mating interface. Contact modules are loaded into the front housing and extend rearward from the front housing. Each contact module has a plurality of conductors that are held by a dielectric contact module body. The conductors have mating portions that extend from the contact module body and mounting portions that extend from the contact module body. The contact modules have channels formed therein. An organizer bar is received in the channels of the contact modules. The organizer bar is manufactured from a dielectric material. The organizer bar holds the positions of the contact modules relative to one another.