An electrical connector that has a housing with a mating interface end section, an opposite cable termination end section, and an inner support member. A core is slidably coupled to the inner support member of the housing and includes a receiving end and a spring engagement end. A spring member is received inside of the housing and behind the core for abutment with the spring engagement end of the core. An interposer may be received in the receiving end of the core and remote from the spring member. The core is axially slidable with respect to the inner support member along a longitudinal axis of the housing between an unmated position, in which the spring member pushes the core outwardly away from the cable termination end of the housing, and a mated position, in which the core pushes inwardly against the spring member.