10 PCS PACK 2x20 SHROUDED IDC 40-pin Male HEADER Cable Mounted IDC Box Header. Low Profile without mounting ears. These connectors mate with any standard 0.1" spaced dual-row pin headers. The insulation displacement (IDC) contacts on these connectors allow them to be quickly and easily crimped onto flat ribbon cable. These are female sockets designed to connect to male pin headers. These connectors have a polarizing tab in the middle to ensure correct orientation when used with a shrouded header ("box header"). Detailed Description 2x20 SHROUDED Male IDC HEADER Cable Mounted IDC Box Header Low Profile without mounting ears 0.1" Pin spacing 0.1" Row spacing Mates with IDC & PCB Female Receptacles Insulation Displacement Connector terminates to 0.050" (1.27mm) flat ribbon cable Gold plated .025"square posts