ITower 930 I/O Function Panel Installation Guide Please refer to the illustration on the section of USB2.0, IEEE 1394a, and Audio connector from the motherboard user manual. Please select the motherboard which used the same USB2.0, IEEE1394, AC’97 as below; otherwise, it will cause damages to device(s). The following illustration is a connection diagram for the front panel I/O cable. NEVER connect an IEEE1394 cable to the USB2.0 connector. Doing so will damage the device. NEVER connect a USB2.