Asus P8P67 REV 3.1 User Manual page 43

4. USB 3.0 connector (20-1 pin USB3_34)
This connector is for the additional USB 3.0 ports, and complies with USB 3.0
specification that supports up to 480 MBps connection speed. If the USB 3.0 front
panel cable is available from your system chassis, with this USB 3.0 connector, you
can have a front panel USB 3.0 solution.
5. USB 2.0 connectors (10-1 pin USB910, USB1112, USB1314)
These connectors are for USB 2.0 ports. Connect the USB module cable to any of
these connectors, then install the module to a slot opening at the back of the system
chassis. These USB connectors comply with USB 2.0 specification that supports up to
48 Mbps connection speed.
Never connect a 1394 cable to the USB connectors. Doing so will damage the motherboard!
ASUS P8P67 REV 3.1 2-25