Special Order: 2MM HM HDR ASY,12 ROW 144 POS PCB Connector Type: PCB Mount Header Data Rate: ≤1 Gb/s Number of Columns: 25 Number of Rows: 12 Backplane Architecture: Mezzanine PCB Mount Header ≤1 Gb/s 25 12 | Hard Metric Backplane Connector | Part Number: 5120638-3 | Internal Number: 5120638-3 | TE Connectivity | Z-PACK