The first product introduced was the Vertical Receptacle and Right Angle Header combination. Many data customers have appreciated the design of the protected receptacle on the backplane. Three different Differential Pairs per column including 3-Pair (16.7mm height), 4-Pair (20mm height) and 5-Pair (25mm height). Connector heights may be chosen for slot pitch limitations or for system airflow considerations. This chart shows the product availability by column pitch.