This PCI Express power splitter cable (6-pin to dual 6-pin) connects a single (standard) 6-pin PCI Express power connection provided by the computer power supply to two nVidia SLI or ATI CrossfireX video cards that require a 6-pin power connection. This PCIe 6-pin to dual 6-pin power cable is a cost-saving solution, which eliminates the expense of upgrading a computer power supply for the sake of compatibility with dual video card systems.