I recently purchased a PC combo kit and built it. The case came with a USB 3.0 front panel but my motherboard did not have a USB 3.0 connection. So I purchase a Internal 19-Pin USB3.0 to USB2.0 Adapter Cable in order to connect my front panel USB ports to the USB 2.0 connector on the motherboard. After I installed it, I tried on the USB ports to make sure they worked and only the USB 3.0 port works but the USB 2.0 port does not. There is only the one cable coming from the front panel so I'm guessing that the just the USB 2.0 port is bad since the other USB 3.0 port works, but I'm not sure. Any thoughts?