odd question. hp elite 8000 cmt with 4 usb 2.0 ports. desktop #1 uses 3 of the 4 front ports for wifi,wireless mouse/keyboard set, 2nd wireless mouse. #2 desktop, from bottom to top, wifi, wireless mouse. upper two ports do not support a second wireless mouse whether the primary mouse is removed or not. a setting I am missing? drivers for the ports missing? will a usb3.o wifi work in a usb 2.0 port?