A connector assembly includes a coaxial connector module and a fiber optic module coupled to the coaxial connector module. The coaxial connector module includes a connector body and coaxial contacts in contact channels. The connector body has a mating interface and fastener openings open at the mating interface to receive fasteners and a window at the mating interface. The fiber optic module includes a housing coupled to the mating interface of the connector body having a cavity and fastener openings receiving the fasteners to couple the housing to the connector body at the mating interface. The fiber optic module includes a fiber optic connector received in the cavity having a mating end and a fiber optic cable extending therefrom. The fiber optic connector is received in the window for mating with a mating fiber optic connector of the mating connector assembly.