I'm using the NZXT H500 and was wondering how the (Break Out Cable) labeled (K) in the manual connects to the Front Panel Cable of the case. It doesn't really tell you which way to put it on properly.
I don't remember where the arrows were located. I do remember that you can only connect it in one orientation. There was no risk in connecting them backwards. Also, you can see from the image that the wires must align.