Asus M3N78 - Manual (Page 40)

1-28 Chapter 1: Product introduction
4. CPU, Chassis, and Power Fan connectors (4-pin CPU_FAN, 3-pin
CHA_FAN, 3-pin PWR_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.
Only CPU Fan connector supports Q-Fan function.
R
M3N78
M3N78 Fan Connectors
CPU_FAN
GN
D
CPU
FA
N PW
R
CPU
FA
N IN
CPU
FA
N PW
M
CHA_FAN
GN
D
Rotation
+12V
PWR_FAN
GN
D
Rotation
+12V
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.
5. 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.
R
M3N78
M3N78 Internal Audio Connector
CD
(black)
Right
Audio Channel
Lef
tA
udio Channel
Ground Ground