Tin Man Recept Assy 4 Pair 16 Column Row-to-Row Spacing: 1.4 mm Row-to-Row Spacing: .055 in Mating Alignment: With Mating Alignment Type: Guide Slot Number of Rows: 12 High Speed Backplane Connector | 1.4 mm .055" With Guide Slot | Part Number: 1934225-1 | Internal Number: 1934225-1 | TE Connectivity | Z-PACK