This 2.54mm Pitch 2x20P 40 Pin 40 Wire female to female IDC Flat Ribbon Cable 50 inch features one IDC (40 pin, Motherboard Header) Female connector and IDC (40 pin, Motherboard Header) Female connector. The cable is constructed of high quality components and expertly designed to ensure durability and reliability.Please refer to the Technical Specifications to ensure your motherboard is compatible with this product.