A connector assembly is configured to be mounted to a substrate that has an opening extending between a mounting side and an opposite side. The connector assembly includes a housing and one or more contacts. The housing has a front end and a back end, with an interior chamber extending inward from a mating interface. The front end of the housing is configured to be partially inserted through the opening in the substrate until a housing mounting surface engages the mounting side of the substrate. The contact extends between a mating end and a contact mounting surface. The contact mounting surface is configured to be mounted to the mounting side of the substrate. The housing and contact mounting surfaces are substantially coplanar in a mourning plane, and a distance between the mating interface and the mounting plane is at least as great as a thickness of the substrate.