I'm planning to use my 2009 27" in target display mode for a gaming PC, I know that the USB ports on the back of the iMac will not be seen by the PC but what if I were to run a USB A to A cable between the PC and the iMac, would the PC then see the USB ports on the back of the iMac as a USB hub so I don't have to keep swapping the keyboard/mouse between 2 machines? I dont especially want to have to use 2 keyboards/mice.