Asus M2A690G - Manual (Page 65)

4-10 Chapter 4: Motherboard info
8. Optical drive audio connector (4-pin CD1)
This connector is for the 4-pin audio cable that connects to the audio
connector at the back of the optical drive.
Enable the CD-IN function in the audio utility when using this
connector.
9. USB connectors (10-1 pin USB56, USB78, USB910)
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.
Never connect a 1394 cable to the USB connectors. Doing so will
damage the motherboard!
R
I nternal Audio Connector
CD
(black)
Right
Audio Channel
Left
Audio Channel
Ground Ground
M2A-VM
R
USB 2.0 Connectors
USB56
USB+5V USB_P6- USB_P6+ GN
D
NC
USB+5V USB_P5
-
USB_P5
+
GN
D
1
USB78
USB+5V USB_P8- USB_P8+ GN
D
NC
USB+5V USB_P7- USB_P7
+
GN
D
1
USB910
USB+5V USB_P10
-
USB_P10
+
GN
D
NC
USB+5V USB_P9- USB_P9
+
GN
D
1 M2A-VM
The USB module is purchased separately.