Asus Motherboard M2V-MX - Manual (Page 37)

ASUS M2V-MX 1-27
Do not forget to connect the fan cables to the fan connectors.
Insufficient air flow inside the system may damage the motherboard
components. These are not jumpers! DO NOT place jumper caps on the
fan connectors.
4. CPU, and Chassis Fan connectors
(4-pin CPU_FAN, CHA_FAN)
The fan connectors support cooling fans of 350mA~740mA (8.88W
max.) or a total of 1A~2.22A (26.64W max.) at +12V. Connect the fan
cables to the fan connectors on the motherboard, making sure that the
black wire of each cable matches the ground pin of the connector.
6. Optical drive audio in connectors (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.
M2V-MX
R
M2V-MX Fan Connectors
CPU_FAN
GND
CPU F
AN PWR
CPU F
AN IN
CPU F
AN PWM
PWR_FAN
GND
Rotation
+12V
M2V-MX
R
M2V-MX Internal Audio Connector
CD
(black)
Right Audio Channel
Left Audio Channel
Ground
Ground