UL, CSA. In the descriptions: M:male connector, F:female connector. EN60603-2 Type B/C/D/E/F, inverted Q/R. A range of DIN 41612 / IEC 60603-2 connectors with 2.54 mm basic grid. Indirect connection system Use in DIN 41494 construction systems (19 technology) Connection between plug-in cards and backplane wiring Connection between two PCBs arranged one above the other Connection to peripheral devices with cable housing Transfer plug for external interfaces of the wiring plane