3M 78 Series 2.54 x 2.54mm PCB IDC Transition Ribbon Cable Connector 78 Series 2.54 x 2.54mm PCB mount two row IDC ribbon cable transition connectors that allow ribbon cable connection to a PCB without the need for two connectors thus reducing costs. These 78 Series PCB IDC transition connectors have a 7.3mm terminated height for low profile off the board applications, solder bumps built into the housings that facilitate board cleaning and fit a standard 2.54 x 2.54mm header layout.