STARTECH PLATE9M16, 16 inch (40cm) 9-Pin Serial Male to 10-Pin Motherboard Header Slot Plate, Product Data Transfer Cable, Length 1.33 ft, Connector on First End 1 x 9-pin DB-9 Male Serial, Connector on Second End 1 x 10-pin IDC, Device Motherboard, Color Gray, Conductor Copper. This 9-pin Serial to 10-pin Header Slot Plate adapter features one DB9 male connector and one IDC10 connector.