1. Use both hands to remove top cover gently.
2. First, loosen two screws located on the top-front cover.
Then push top-front cover in the direction as shown gently and finally pull up to detach the top-front cover.
3. Flip top-front cover over to loosen two screws near front I/O module and detach it gently.
4. Install USB 3.0 front I/O module (part number: G11303260) and fasten two screws back gently.
5. Assemble parts back in reverse order carefully.
Your case is now USB3 ready.
As the illustrations above show, most enthusiast motherboards with heat pipes will work fine in the ##, the heat source is located below other parts of the heat pipe.
CPU cooler:
Horizontal style cooler
Good orientation
Good orientation
Bad orientation
VGA cooler
The illustration here shows a VGA cooler that will not work well in the ## because the heat source side (touching the GPU) ends up being located higher than the other end.