A connector system includes a substrate having a front side and a rear side with an opening therethrough, and a connector assembly coupled to the substrate. The connector assembly includes a housing having a body at a bottom and a head at a top that extends along the front side with the body extending through the opening to the rear side. The housing has a contact channel extending therethrough. A poke-in contact is received in the contact channel through the top of the housing. The poke-in contact has a wire trap configured to receive a wire therein in a wire loading direction through the bottom of the housing. The poke-in contact has a mounting leg extending from the head and mounted to the front side of the substrate.