IMP100S,H,RA2P10C,UG,OEW39,5.5 Number of Positions: 60 Row-to-Row Spacing: 1.35 mm Row-to-Row Spacing: .053 in Mating Alignment: With Mating Alignment Type: Polarization High Speed Backplane Connector | 60 1.35 mm .053" With | Part Number: 2143012-3 | Internal Number: 2143012-3 | TE Connectivity