Asus M2N-MX - Manual (Page 36)

1-26 Chapter 1: Product introduction
Never connect a 1394 cable to the USB connectors. Doing so will
damage the motherboard!
6. USB connectors (10-1 pin USB56, USB78, USB 910)
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.
7. Optical drive audio in connector (4-pin CD)
These connectors allow you to receive stereo audio input from sound
sources such as a CD-ROM, TV tuner, or MPEG card.
The USB 2.0 module is purchased separately.
M2N-MX
R
M2N-MX USB 2.0 Connectors
USB56
USB+5V USB_P6- USB_P6+ GND NC
USB+5V USB_P5- USB_P5+
GND
1
USB78
USB+5V USB_P8- USB_P8+ GND NC
USB+5V USB_P7- USB_P7+
GND
1
USB910
USB+5V USB_P10- USB_P10+ GND NC
USB+5V USB_P9- USB_P9+
GND
1
M2N-MX
R
M2N-MX Internal Audio Connector
CD
(black)
Right Audio Channel
Left Audio Channel
Ground
Ground