Last month I buy this MSI P67A-GD65 motherboard and that time I use an COOLER MASTER HAF X RC-942-KKN1 Black case for this system CPU. When I locate the motherboard then I found that there is an 3 USB port available on it. The actual problem on this motherboard is to be when I try to connect this three USB port then the mobo only access the single port. I donít why this happen on this system. Any help to solve this problem will be appreciate.