What is the USBPWF jumper on the motherboard responsible for?

Question

Iron

In general, the essence of the issue in the topic. I move it back and forth, it doesn't make a difference. From sleep mode and from hibernation, it exits by pressing a button on the keyboard, but, as I understand it, the KB_USBPWB jumper is responsible for this. Mother of ASUS A88XM-A for AMD FM2+. The instruction to the mother is useless, I understand English, but I don’t get the point here.