Hi there, I have the evga 680i motherboard. However, I plugged my Diamondback into the USB slot in the back of the case along with my Logitech wireless keyboard. The Diamondback is lighting blue but not moving the pointer on the screen when I try to move the mouse, the keyboard also lights up, so not a power issue. When I plug the Diamonback and Logitech into the side USB ports they work fine. Can anyone enlighten me to what the problem could be? Many thanks.