Special Order: MBXL R/A HDR 3ACP+16S+2P PCB Connector Type: PCB Mount Header PCB Mount Orientation: Right Angle Connector System: Board-to-Board Number of Positions: 21 Number of Rows: 4 PCB Mount Header Right Angle Board-to-Board 21 | PCB Header & Receptacle | Part Number: 3-6450130-9 | Internal Number: 3-6450130-9 | TE Connectivity