My computer's motherboard has an X16 pci express slot, but no way shape or form to power any graphics card. There was no pci power cable that came with the psu, and there is also no molex or 6-pin pci adapters on the mobo either. My computer is an HP 750-137, with an odense motherboard. If anybody has any advice as to what I should do, or if anybody has this type of computer and mobo and I'm just somehow no noticing something that was there all along, please let me know.