Asus P8B75-M LX User Manual page 40

11. USB 3.0 connector (20-1 pin USB3_34)
This connector is for the additional USB 3.0 ports. Connect the USB 3.0 bracket cable
to this connector, then install the USB 3.0 bracket to the rear side of the chassis. If your
chassis support customized front panel installation, with ASUS USB 3.0 header, you
can have a front panel USB 3.0 solution.
P8B75-M LX
P8B75-M LX USB3.0 Front panel connector
The USB 3.0 module is purchased separately.
12. USB 2.0 connectors (10-1 pin USB56, USB78)
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
480 Mbps connection speed.
P8B75-M LX
P8B75-M LX USB2.0 connector
Never connect a 1394 cable to the USB connectors. Doing so will damage the motherboard!
The USB module cable is purchased separately.
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USB3_34
USB78 USB56
Chapter 1: Product introduction