Asus M2N68 - Manual (Page 39)

ASUS M2N68 1-27
4. CPU, Power, and Chassis 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.
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. Digital audio connector (4-1 pin SPDIF_OUT)
This connector is for an additional Sony/Philips Digital Interface (S/PDIF)
port(s). Connect the S/PDIF Out module cable to this connector, then install
the module to a slot opening at the back of the system chassis.
The S/PDIF module is purchased separately.
M2N68
M2N68 Fan Connectors
CPU_FAN
GND
CPU FAN PWR
CPU FAN IN
CPU FAN PWM
CHA_FAN
GND
Rotation
+12V
PWR_FAN
GND
Rotation
+12V
M2N68
M2N68 Digital Audio Connector
+5
V
SPDIFOU
T
GN
D
SPDIF_OUT