Asus V4-M3A3200 - Manual (Page 66)

4-8 Chapter 4: Motherboard info
Never connect a 1394 cable to the USB connectors. Doing so will damage the
motherboard!
6. USB connectors (10-1 pin USB78, USB910, USB1112)
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.
7. Optical drive audio in connector (4-pin CD)
This connector allows you to receive stereo audio input from sound sources
such as a CD-ROM, TV tuner, or MPEG card.
M3A78-EM USB 2.0 Connectors
R
M3A78-EM
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
USB1112
USB+5V USB_P12- USB_P12+ GN
D
NC
USB+5V USB_P1
1-
USB_P1
1+
GND
1
M3A78-EM Internal Audio Connector
R
M3A78-EM
CD
(black)
Right
Audio Channel
Lef
tA
udio Channel
Ground Ground