Wired Keyboard USB Power Supply Problem

Hello,
I'm a proud owner of an iMac 27" which I ordered with the Apple Wired Keyboard because it was equipped with two additional USB Ports.
I'm using the Astro Gaming Astro A40 with their Mixamp and it works perfectly fine if I plug it into the keyboard.
Now I installed Bootcamp with Windows 7 Professional and it tells me the power supply in the keyboard is to low for my headset and my Mixamp.
Does anybody know a solution for that problem?
Why does Windows cry about that while Mac is perfectly fine with this.
I hope somebody can help me. Thank You
With best regards
ChickenDuy

From
Support FAQ - Astro Gaming
For PC Users: Much like discrete graphics, audio, or physics hardware free up CPU cycles and make our games run faster, the USB drivers built into the MixAmp provide a simple plug and play solution to offloading communication and music duties to the MixAmp.
My guess would be that these drivers are not loaded in OSX. When you run Windows via bootcamp, these drivers are loaded. Based on the function described, they draw more power from your USB bus than they would in the OS X environment. Yet the machine is still only willing to supply 500 mA to the particular hub. I think, therein lies the problem. Or, atleast, a theory.

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yea, it comes with the 4-pin atx1 connector and 20-pin atx2 connector.
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Thank you for listening to my gripes. I really don't think I'll make the mistake of buying the first issue of a model.
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OK, first thing -to restore your bluetooth, shut down, unplug for a few minutes and then reboot. Thay usually brings the BT back. You should also repair permissions. Reset your SMU nd your PRAM as well.
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