Multiple 9 pin USB plugs but only 1 9 pin header, the rest are 4 pin headers

[MikeFallon]

I'm upgrading my current HP PC by putting in a gaming video card, and a new power supply, and also moving everything into a bigger case. Im reusing the CPU, mobo, HDDs, and RAM from the current HP machine, because im on a budget, and their performance is good enough for now. The only issue I foresee is the fact the case im buying has 2 sets of 2 USB 2.0 Ports on the front of the case (my current stock HP case has 1 set of 2), But the motherboard (Pegatron M2N78-LA) only has 1 9-pin USB header, the rest are only 4 pin headers (5 of those). I know you can plug a 4 pin plug onto a 9-pin header, but what about the other way around? Is there any way I can connect more than the 1 9pin plug into the motherboard, and not just have to leave the other USB ports on the case useless?

 

[Zerk2012]

The case should just have 2 X 9 pin plugs to run the front 4 USB 2.0. 2 operating off each plug.
The 9 pin will not plug into the 4 pin.