Asus Motherboard M2V-MX - Manual (Page 38)

1-28 Chapter 1: Product introduction
Never connect a 1394 cable to the USB connectors. Doing so will
damage the motherboard!
7. USB 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.
The USB 2.0 module is purchased separately.
M2V-MX
R
M2V-MX USB 2.0 Connectors
USB78
USB+5V USB_P8- USB_P8+ GND NC
USB+5V USB_P7- USB_P7+
GND
1
USB56
USB+5V USB_P6- USB_P6+ GND NC
USB+5V USB_P5- USB_P5+
GND
1