I am mid build on a new desktop and I was attempting to use an Ultra Modular ATX power supply 850w special edition X4. The conflicting part is the 8-pin EATX12V power connector on my motherboard, which is a ASUS Z97-A. The manual on the power supply says to use "the 8-Pin+12Vcable" but I cannot find such a cable in the bundle. The closest thing I can find are two PCIE 6+2-Pin cables which to my understanding would not be compatible, yet appears to be the only cable I have that would fit in the connector. Am I incorrect should go ahead with using this cable or am I missing a cable I should definitely have?