Hello, i have a cx 750watt modular i have recently ordered some single sleeved cables, my psu has the 24 pin and i dont know what it is called but the cable that is in the corner the one that gives power to cpu inside the psu, the cables i ordered come with one do i have to use the one connected to my psu or can i connect the one i ordered on to a 8 pin slot on my psu