Hey, I just recently built my own rig. I'm using the ASUS M5A99FX PRO R2 and I'm very happy so far. I overclocked my FX8350 to 4.8ghz on my water cooling using the FSB instead of the multiplier. So my problem is the USB. Couple days ago, I had a little Windows bubble pop-up that said "Power Surge: One of your USB devices are drawing too much power" or something along those lines. The problem is, I use a headset with a USB reciever+microphone reciever that basically makes a link from my headset to the reciever with a 3.5mm jack for audio only. When I plug the USB dongle and 3.5mm cable to my PC, it works fine but I hear this constant buzzing noise in the background. When I try the 3.5mm in my PC and the USB dongle to a powered hub connected to my PC, it works fine again but still has that buzzing noise(only slightly quieter) When I have the 3.5mm in my PC and the USB dongle into a USB wall plug, it works fine with no buzzing, but the mic doesnt work because the reciever doubles as a USB mic, picking up the signal from my headset mic. After some research, I believe that it might be a USB power issue or it might be from my CPU overclock slightly bringing up the Hyper-Transport Link and the Northbridge. Sorry for the long post, this buzzing is just really driving me crazy!