2MM HDR, 55 POS EXTN MOD PCB Connector Type: PCB Mount Header Data Rate: ≤1 Gb/s Number of Columns: 11 Number of Rows: 5 Backplane Architecture: Mezzanine PCB Mount Header ≤1 Gb/s 11 5 | Hard Metric Backplane Connector | Part Number: 5100159-1 | Internal Number: 5100159-1 | TE Connectivity | Z-PACK