IMP100S,H,V3P16C,UG,OEW39,4.5 Number of Positions: 144 Row-to-Row Spacing: 1.35 mm Row-to-Row Spacing: .053 in Mating Alignment: With Mating Alignment Type: Polarization High Speed Backplane Connector | 144 1.35 mm .053" With | Part Number: 2007804-1 | Internal Number: 2007804-1 | TE Connectivity