Backplane communication system including a backplane and a rack assembly having an array of electrical connectors with respective mating ends. The backplane communication system also includes a plurality of guide pins that each have a cross-sectional diameter taken transverse to an axis of the guide pin. The backplane interfaces with the rack assembly such that the guide pins extend through guide holes of the backplane and the electrical connectors are aligned with mating windows. Each of the guide pins has a leading segment that extends through the corresponding guide hole and a trailing segment that is disposed within the corresponding guide hole. The cross-sectional diameter along the trailing segment is greater than the cross-sectional diameter along the leading segment.