A connector includes a conductive body with a central bore along a central axis. The body includes a mounting face for positioning adjacent a mounting surface of a circuit member and for removably engaging a reference pad of the circuit member. A center conductive contact includes a board engaging end for removably engaging a signal pad of the circuit member. An inner dielectric insert is positioned between the conductive body and the center conductive contact. The conductive body, the center conductive contact and the inner dielectric insert are configured to operate at a frequency of at least 40 GHz with a return loss of greater than 20 dB.