They will be able to MUX two DP lanes onto two of the USB SS lanes and keep one for USB 3.1 as well. Also, there are dedicated wires for USB 2.0 as well that a

They will be able to MUX two DP lanes onto two of the USB SS lanes and keep one for USB 3.1 as well. Also, there are dedicated wires for USB 2.0 as well that are separate from the SS lanes.