I upgraded my PC last week and it all went very well and everything is working as it should but I have a problem understanding the USB port connections. On the motherboard outlet panel on the back of the PC there are several USB 3.1, 3.0 and 2.0 ports. When I was connecting all the cables and plugs etc to the mother board I had a plug that went to the the USB 2.0 internal motherboard connector the other end of which goes to two extra USB ports a headphone and microphone jack panel on the front of my PC. When reconnecting my external devices to the motherboard back panel I was unsure which ports to use so as all of them have USB 2.0 plugs I used them. This means the USB 3.0 and 3.1 connections are unused at present. Can someone explain to me what I plug into these, if I plug in the present USB 2.0 peripherals like the keyboard, printer etc to them will they work better or not all?.