Cut the USB wire and pass it through the hole you made previously in the base.
Strip the USB cable and locate the black and red weirs (black wire = ground, Red wire = +5V). You can cut out the white and green data weirs for more space.
Now connect the black wire to the ground pins and the red wire to voltage pins.
The best way to attach the weirs to the pins of the CPU is to cut the wires without striping them and then slide the pins inside.
Finally, you have to attach the CPU to the grill by Epoxy