Report "I lost a PCI-E cable and now I need a second one to power an upgraded graphics card on my 550W. (MSI R7870). Can I use a standard PCI-E cable in place of it? Looking at the wires, it seems that the power supply puts out 3 grounds and 3 hot on both ends while all the PCI-E cables I find have that set on one end, but only 4 pins filled on the other (grounds in the middle column in both rows, and all 3 hots on the bottom row's left and right pins.) I don't want to plug it in and fry anything"