Here is what I know about the mobo I am imminently receiving (this week!):
ASMedia® USB 3.0 controller :
4 x USB 3.0 port(s) (2 at back panel, blue, 2 at mid-board)
Intel® Z68 chipset :
12 x USB 2.0 port(s) (8 at back panel, black, 4 at mid-board)
It is the ASUS Maximus IV Gene-Z 1155 Z68... several mid-board USB's. ;o)
A couple of suggestions:
Corsair Carbide 400R - http://www.newegg.com/Product/Product.aspx?Item=N82E16811139008
Fractal Design Arc MINI - http://www.newegg.com/Product/Product.aspx?Item=N82E16811352008
Fractal Design Arc MIDI - http://www.newegg.com/Product/Product.aspx?Item=N82E16811352007
Note - with the Arc MINI you will only be able to use Micro ATX motherboards.
Gee whiz - that adapter from Cooler Master is like $59.00!!!! Too bad I don't see an option to buy it with the case for a discounted price. Maybe it's made out of gold.
Yeah Cooler Master tends to way overprice any addins or modifications for their towers.