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Asus M4A77D - Page 38

Asus M4A77D
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CPU_FAN
GND
CPU FAN PWR
CPU FAN IN
CPU FAN PWM
M4A77D
M4A77D fan connectors
GND
+12V
Rotation
CHA_FAN
8. CPU and chassis fan connectors (4-pin CPU_FAN, 3-pin CHA_FAN)
Connect the fan cables to the fan connectors on the motherboard, ensuring that the
black wire of each cable matches the ground pin of the connector.
Only the 4-pin CPU fan supports the ASUS Q-Fan feature.
DO NOT forget to connect the fan cables to the fan connectors. Insufcient air ow inside
the system may damage the motherboard components. These are not jumpers! DO NOT
place jumper caps on the fan connectors.
9. IEEE 1394a connector (10-1 pin IE1394_1)
This connector is for an IEEE 1394a port. Connect the IEEE 1394a module cable
to this connector, then install the module to a slot opening at the back of the system
chassis.
Never connect a USB cable to the IEEE 1394a connector. Doing so will damage the
motherboard!
The IEEE 1394a module is purchased separately.
M4A77D
M4A77D
IEEE 1394a Connector
PIN 1
TPA1-
GND
TPB1-
+12V
GND
TPA1+
GND
TPB1+
+12V
IE1394_1
Chapter 1: Product introduction1-28

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